Month: April 2022

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Inorganica Chimica Acta called Three-dimensional bimetallic oxides constructed from molybdophosphonate chains and secondary-metal/4-pyridyltetrazole components, Author is Jones, Stephanie; Darling, Kari; Zubieta, Jon, which mentions a compound: 14389-12-9, SMILESS is C1(C2=NN=NN2)=CC=NC=C1, Molecular C6H5N5, Quality Control of 5-(4-Pyridyl)-1H-tetrazole.

The hydrothermal reactions of molybdenum(VI) oxide, 1,2-ethylenediphosphonic acid, 4-pyridyltetrazole (4-Hpt) and the appropriate metal acetate yielded three-dimensional bimetallic oxides [Mx(4-Hpt)y(H2O)z{Mo5O15(O3PCH2CH2PO3)}]·nhydrate (M = Co or Ni, x = 2, y = 2, z = 6; M = Cu, x = 4, y = 3, z = 1). The Co(II) and Ni(II) phases are isomorphous with structures constructed from the common {Mo5O15(O3PCH2CH2PO3)}n4n- chains linked through binuclear {M2(4-Hpt)2(H2O)6}4+ subunits to provide the three-dimensional connectivity. The Cu(I) species consists of the molybdophosphonate chains embedded in a framework of Cu(I) tetrahedra linked through the tetrazole N donors of the 4-Hpt ligands.

When you point to this article, it is believed that you are also very interested in this compound(14389-12-9)Quality Control of 5-(4-Pyridyl)-1H-tetrazole and due to space limitations, I can only present the most important information.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《2-Aminopyridine-5-sulfonamide and some derivatives》. Authors are Naegeli, C.; Kundig, W.; Brandenburger, H..The article about the compound:2-Chloro-5-pyridinesulfonyl chloridecas:6684-39-5,SMILESS:ClC1=NC=C(C=C1)[S](=O)(=O)Cl).Formula: C5H3Cl2NO2S. Through the article, more information about this compound (cas:6684-39-5) is conveyed.

The pyridine analog, 2-aminopyridine-5-sulfonamide (I), of the chemotherapeutically significant H2NC6H4SO2NH2, and a series of its derivatives substituted at the N atom of the side chain have been prepared from 2-chloropyridine-5-sulfonyl chloride (II) obtained either from 2-aminopyridine-5-sulfonic acid (III) or from N-methyl-2-pyridone-5-sulfonic acid (IV). A solution of 250 g. of 2-aminopyridine in 750 g. of H2SO4.H2O was heated at 200-10° for 5 hrs. with 0.5 g. Al powder and the cooled product was poured on ice. The washed precipitate was combined with further fractions from the mother liquor and crystallized from hot H2O, yielding 278 g. (60%) of III; Ac derivative, C7H8N2O4S, m. 300-2° (decomposition), from the Na salt which was converted to the difficultly soluble Cu salt. A suspension of 85 g. of finely powd. III in 600 cc. of 20% HCl at 10° was stirred with 50 g. (1.5 mols.) of NaNO2 in 125 cc. H2O. After 3 hrs. the solution was evaporated to dryness in vacuo, taken up in hot H2O and precipitated with alc., producing 83 g. (97%) of 2-pyridone-5-sulfonic acid (V), converted by chlorination with PCl5 (C. A. 25, 4267) into II. IV (2 g.), obtained by treating N-methyl-2-pyridone with Me2SO4 (Ger. 597,452, C. A. 28, 5083.5), was ground with 4.5 g. PCl5 and refluxed at 130-5° for 5 hrs. with a few drops of POCl3. The cold product was poured over ice and the solid mass was ground with NaHCO3, washed and dried. Extraction with petroleum ether gave 1.7 g. (82%) of II, m. 51°. Gradual addition of 50 g. II in 50 cc. Me2CO to well-stirred cold 20% NH4OH, evaporation and recrystallization from H2O produced 42.7 g. (94%) of iridescent crystals of 2-chloropyridine-5-sulfonamide (VI), C5H5ClN2O2S, m. 158-9°, converted by heating in a bomb-tube for 5 hrs. at 125-60° with 20% NH4OH into 2-aminopyridine-5-sulfonamide (VII), C5H7N3O2S, m. 175.0-6.5°; di-Bz derivative, C19H15N3O4S, m. 221-3°. By heating with the requisite amine under a reflux or, when necessary, in a bomb-tube, VI was converted into 2-ethylamino-, 2-diethylamino-, 2-butylamino-, 2-allylamino-, 2-benzylamino- and 2-phenylaminopyridine-5-sulfonamide, m. 190-1°, 116-17, 121-2°, 195-201°, 199-201° and 181-3°, resp. Heating 5 g. VI with 8 mols. of 33% EtNH2 in a bomb-tube at 135-50° for 4 hrs. yielded 2-ethylaminopyridine-5-sulfonethylamide, C9H15N3O2S, m. 139-41°. Cautious addition of 2.9 g. (2.2 mols.) of PhNH2 to 3 g. VI in 2.5 cc. benzene with cooling, washing the pasty residue with dilute HCl and recrystallization from alc. gave 3 g. (79%) of 2-chloropyridine-5-sulfonanilide, C11H9ClN2O2S, m. 149-51°, converted by heating in a bomb-tube for 2 hrs. at 100-30° with 20% NH4OH to 2-aminopyridine-5-sulfonanilide, m. 176-8°. The addition of 10 g. II in 10 g. anhydrous pyridine to 8.2 g. sulfanilamide in 15 g. pyridine below 40° precipitation with H2O and crystallization from dilute alc. gave 13 g. (79%) of N4-(2′-chloropyridine-5′-sulfonyl)sulfanilamide, C11H10ClN3O4S2, m. 200-2°, transformed by heating with 25% NH4OH in a bomb-tube for 8 hrs. at 130-50° into the corresponding 2′-amino compound, m. 200-2°. Addition of 3.7 g. VII in 6 cc. pyridine to 4 g. II in 4 g. pyridine below 35°, washing the precipitate from H2O with dilute HCl and drying in vacuo yielded 6.5 g. (99%) of orange crystalline 2-(2′-chloropyridine-5′-sulfonyl)aminopyridine-5-sulfonamide, C10H9ClN4O4S2, m. 253-5°, converted by autoclaving in saturated NH4OH for 5 hrs. at 7 atm. at 120-60° into the corresponding 2′-amino derivative, m. 260°. Heating a mixture of 5.5 g. VI and 5 g. morpholine (VIII) in a bomb-tube for 4 hrs. at 120° and crystallization of the product from H2O yielded 5.3 g. (76%) of 2-(N-morpholyl)pyridine-5-sulfonamide, C9H13N3O3S, m. 182-3°. The dropwise addition of 1.5 g. II in 5 cc. Me2CO to a well-stirred solution of 1.23 g. (2 mols.) VIII in 3 cc. H2O gave 1.7 g. (95%) of colorless platelets of 2-chloropyridine-5-sulfonmorpholide, C9H11ClN2O3S, m. 143-4°, converted by refluxing for 5 hrs. with 2 mols. VIII in xylene and recrystallizing the product from alc., in 85% yield, into colorless 2-(N-morpholyl)pyridine-5-sulfonmorpholide. C13H19N3O4S, m. 189-91°. All the above compounds are well tolerated and their action on mice infected with streptococci will be reported elsewhere. The extreme reduction of activity by substitution of the benzene ring in sulfanilamide type compounds “”by heterocyclic rings”” was reported by Tullar at the Dallas meeting of the Am. Chem. Soc. (1938).

When you point to this article, it is believed that you are also very interested in this compound(6684-39-5)Formula: C5H3Cl2NO2S and due to space limitations, I can only present the most important information.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Pyridine mercurials》. Authors are Hurd, Charles D.; Morrissey, Clarence J..The article about the compound:2-Chloro-5-pyridinesulfonyl chloridecas:6684-39-5,SMILESS:ClC1=NC=C(C=C1)[S](=O)(=O)Cl).Name: 2-Chloro-5-pyridinesulfonyl chloride. Through the article, more information about this compound (cas:6684-39-5) is conveyed.

The preparation and properties of di-3-pyridylmercury (I), bis(3-pyridylmercuri)ammonium chloride (II), 6-chloro-3-pyridylmercuric chloride (III), and 2-pyridylmercuric chloride (IV) are described. 3-Pyridylmercuric acetate (V) (75 g.) in 3 l. H2O at 80° treated dropwise with 13 g. NaCl in 50 cc. H2O gave 81% 3-pyridylmercuric chloride (VI), m. about 245°; it gave recrystallized from H2O (2 g./1 l.) needles, m. 265-8°. V in hot H2O treated with aqueous NaBr gave 3-pyridylmercuric bromide, m. 275° (decomposition). Similarly was obtained the corresponding iodide, yellow solid, m. 280° (decomposition). Br (10 g.) added during 3.5 h. with stirring to 20 g. VI and 6.6 g. NaBr in H2O at 50-60°, the mixture held 15 h. at 20°, treated with 5.7 g. HCl, and filtered from 16.4 g. residue, the filtrate basified and extracted with Et2O, and the residue (3.0 g.) from the extract redistilled yielded 1.6 g. 3-bromopyridine, b. 168-71.5°. VI (0.2 g.) refluxed 0.5 h. with 25 cc. 0.1N iodine containing 1 g. KI and 3 cc. CHCl3, and the mixture titrated with 0.1N Na2S2O3 indicated a quant. reaction. VI (10 g.), m. 245°, and 100 g. NH4OH stirred occasionally during 0.5 h. and filtered gave 5.1 g. solid filter residue of II, m. 168-80°, which liberated NH3 when boiled with dilute NaOH; the filtrate evaporated and the solid residue (4.8 g.) leached with H2O left unchanged VI, m. 240°. Na2S2O3 (50 g.) in 50 cc. H2O treated with 10 g. V, and the solution allowed to stand 0.5 h. gave 4.5 g. I, white solid, m. 225-6°. II (1 g.) mixed with 10 saturated aqueous Na2S2O3, and the precipitate recrystallized from EtOH gave I, m. 255°, which recrystallized from EtOH gave crystals, m. 239°. I in EtOH mixed with alc. HgCl2 gave VI, m. 240-5°. I in EtOH treated with alc. gave the di-HCl salt, white crystals, m. 222° (decomposition). Similarly was prepared the dipicrate, yellow crystals, m. 255° (decomposition). I.2HCl heated to 200° evolved pyridine. I dipicrate treated with alc. KOH gave I, m. 237-8°. The urethane of 3-aminopyridine (VII) acidified with HCl and heated to 100° until the effervescence ceased, the H2O evaporated, and the residue dissolved in hot C6H6 and precipitated with 2 volumes ligroine gave the amine, m. 62°, in 40% yield. VII (1.88 g.) was diazotized in 6 cc. cold. concentrated HCl with 1.4 g. NaNO2 in 6 cc. H2O and then 5.4 g. HgCl2 in 6 cc. HCl added to yield 6.2 g. diazonium salt-HgCl2 double salt (VIII). VIII (5 g.) mixed with cooling with 5 g. Cu in 30 cc. Me2CO, the mixture treated with 30 cc. NH4OH, allowed to stand 15 h., diluted with an equal volume H2O, and filtered, the filter residue extracted in a Soxhlet apparatus 1 h. with Me2CO, the extract evaporated, and the residue (0.8 g.) crystallized from a little EtOH gave I, m. 232°. VI (10 g.) added to 50 cc. cold NH4OH, the mixture filtered after 0.5 h., the filtrate treated with 10 g. Cu powder, and filtered after several days, the filtrate evaporated to dryness, and the residue recrystallized from EtOH gave a small amount of I, m. 227-34°. 2-Pyridinethiol (22 g.) (from 2-bromopyridine and thiourea), 300 cc. HCl, and 70 cc. ice water treated at 0-5° with excess gaseous Cl, the mixture poured into 800 cc. ice water, and a part of the precipitate recrystallized by dissolving in (CH2Cl)2 at 40° and cooling to -5° gave an unidentified substance, white needles, m. 210° (from Me2CO); the remainder of the solid suspended in 200 cc. cold H2O, mixed with 40 g. Zn dust, heated 20 min. to boiling, made alk. with aqueous Na2CO3, and filtered, the filtrate neutralized, heated with 25 g. HgCl2 to boiling, refluxed 2 h., and filtered, and the filtrate neutralized with HCl yielded IV, white solid, m. 275° (from MeOH). 2-Chloro-5-pyridinesulfonyl chloride (25 g.), m. 51°, treated with vigorous stirring with 23 g. Zn dust, the mixture refluxed 0.5 h., made alk. with Na2CO3 and filtered, the filter residue washed with hot aqueous Na2CO3, the combined filtrates neutralized, treated with 32 g. HgCl2, refluxed 2 h., and filtered, and the filter residue washed with H2O and dried gave 4.5 g. solid, m. 130°, which heated twice with 10% aqueous NaOH at 80°, filtered hot, and washed with H2O yielded 1.5 g. III, m. 263°.

When you point to this article, it is believed that you are also very interested in this compound(6684-39-5)Name: 2-Chloro-5-pyridinesulfonyl chloride and due to space limitations, I can only present the most important information.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Journal of Molecular Structure called Novel Hg(II) and Pd(II) benzotriazole (Hbta) complexes: Synthesis, characterization, X-ray crystal structure of [Pd(PPh3)(μ-bta)Cl]2. DMSO and thermodynamic study of their H2 storage, Author is Al-Jibori, Subhi A.; Al-Doori, Luma A.; Al-Janabi, Ahmed S. M.; Alheety, Mustafa A.; Akbas, Huseyin; Karadag, Ahmet, which mentions a compound: 1663-45-2, SMILESS is P(CCP(C1=CC=CC=C1)C2=CC=CC=C2)(C3=CC=CC=C3)C4=CC=CC=C4, Molecular C26H24P2, Reference of 1,2-Bis(diphenylphosphino)ethane.

Benzotriazole (Hbta) complexes with Hg(II) and Pd(II) of the types: [Hg(bta)2] (1), [Hg(bta)2(diphos)]; diphos = dppe (2), dppp (3) or dppb (4), [Hg(bta)2(PPh3)2] (5), [Pd(Hbta)2Cl2] (6), [Pd(bta)Cl]2(7) and [PdCl(bta)(PPh3)]2. DMSO (8) were prepared and characterized by elemental analyses, conductivity measurements, IR, 1H- and 31P-{1H} NMR spectra.[Pd(PPh3)(μ-bta)Cl]2. DMSO (8) was structurally characterized by single-crystal x-ray diffraction. Structural information exposed that benzotriazole acts as a bidentate bridging ligand bonded through the deprotonated nitrogen and the neutral nitrogen atoms. The hydrogen storage ability of complexes (1-4) was studied after detecting their BET surface area. 1 Is able to store 3.35% phys. at 77 K under 120 bar.

When you point to this article, it is believed that you are also very interested in this compound(1663-45-2)Reference of 1,2-Bis(diphenylphosphino)ethane and due to space limitations, I can only present the most important information.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Category: chiral-nitrogen-ligands. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 2-Aminoquinazolin-4(3H)-one, is researched, Molecular C8H7N3O, CAS is 20198-19-0, about 2,4-Diaminoquinazolines as Dual Toll-like Receptor (TLR) 7/8 Modulators for the Treatment of Hepatitis B Virus.

A novel series of 2,4-diaminoquinazolines was identified as potent dual Toll-like receptor (TLR) 7 and 8 agonists with reduced off-target activity. The stereochem. of the amino alc. was found to influence the TLR7/8 selectivity with the (R) isomer resulting in selective TLR8 agonism. Lead optimization toward a dual agonist afforded (S)-3-((2-amino-8-fluoroquinazolin-4-yl)amino)hexanol 31 as a potent analog, being structurally different from previously described dual agonists (McGowan J. Med. Chem. 2016, 59, 7936). Pharmacokinetic and pharmacodynamic (PK/PD) studies revealed the desired high first pass profile aimed at limiting systemic cytokine activation. In vivo pharmacodynamic studies with lead compound 31 demonstrated production of cytokines consistent with TLR7/8 activation in mice and cynomolgus monkeys and ex vivo inhibition of hepatitis B virus (HBV).

When you point to this article, it is believed that you are also very interested in this compound(20198-19-0)Category: chiral-nitrogen-ligands and due to space limitations, I can only present the most important information.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Application In Synthesis of 1,5-Dibromopentane. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 1,5-Dibromopentane, is researched, Molecular C5H10Br2, CAS is 111-24-0, about Influence of dicationic quaternary ammonium gemini surfactant system on metal-amino acid complex-ninhydrin reaction. Author is Kumar, Dileep; Rub, Malik Abdul.

In the current study, we have elucidated the influence of dicationic quaternary ammonium geminis system on metal-amino acid [Ni(II)-his]+ complex-ninhydrin reaction with the help of UV-vis spectrophometer at 343 K and pH 5.0. Under varying exptl. conditions, rate constant values, kψ, were determined using a computer-based program. Quaternary ammonium gemini systems (rate constant values of 16-6-16, 16-5-16 and 16-4-16 at 30 x 10-5 mol dm-3 are 5.5 x 10-5 s-1, 6.5 x 10-5 s-1 and 7.5 x 10-5 s-1, resp.) are detected more superior compared to aqueous system (rate constant in aqueous is 1.7 x 10-5 s-1). Study was catalyzed and accelerated by gemini surfactants (even though at concentrations below than their cmc values) compared to aqueous medium. Rate constant increases progressively on increasing [gemini] (region I, where [gemini] is smaller than their cmc) and leveling-off regions attain (region II, at [gemini] up to 400 x 10-5 mol dm-3). Afterward, gemini provides a region III of increasing kψ at higher concentration (region III, beyond 400 x 10-5 mol dm-3). Exptl. results acquired in dicationic quaternary ammonium gemini surfactant system are deduced quant. by kinetic pseudo-phase model. For determination of cmc of geminis having a different methylene spacer chain length (s = 4, 5, 6), the specific conductance at varied [16-6-16], [16-5-16] and [16-4-16] (i.e., water and water + ninhydrin + [Ni(II)-his]+) were 0.043 x 10-3 mol dm-3 at 303 K and 0.053 x 10-3 mol dm-3 at 343 K; 0.034 x 10-3 mol dm-3 at 303 K and 0.044 x 10-3 mol dm-3 at 343 K; 0.032 x 10-3 mol dm-3 at 303 K; 0.040 x 10-3 mol dm-3 at 343 K, resp., recorded on a conductivity meter. Several activation parameters for 16-6-16, 16-5-16 and 16-4-16 (ΔH# = 45.0, 43.5 and 42.0 kJ mol-1; ΔS# 87.0, 87.6 and 88.3 JK-1; Ea = 47.8, 46.3 and 44.8 kJ mol-1) and binding parameters for 16-6-16, 16-5-16 and 16-4-16 (KX = 63.0, 58.0 and 54.0 mol-1 dm3; KY = 70.0, 66.0 and 62.0 mol-1 dm3) are also determined

As far as I know, this compound(111-24-0)Application In Synthesis of 1,5-Dibromopentane can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Recommanded Product: 111-24-0. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 1,5-Dibromopentane, is researched, Molecular C5H10Br2, CAS is 111-24-0, about A new polar perovskite coordination network with azaspiroundecane as A-site cation. Author is Burger, Stefan; Kronawitter, Silva; Bostroem, Hanna L. B.; Zareba, Jan K.; Kieslich, Gregor.

ABX3 perovskite coordination networks are a rapidly growing sub-class of crystalline coordination networks. At present, synthetic efforts in the field are dominated using com. available building blocks, leaving the potential for tuning properties via targeted compositional changes largely untouched. Here the authors apply a rational crystal engineering approach, using 6-azaspiro[5.5]undecane ([ASU]+) as A-site cation for the synthesis of the polar perovskite [ASU][Cd(C2N3)3].

As far as I know, this compound(111-24-0)Recommanded Product: 111-24-0 can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Electric Literature of C8H7N3O. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 2-Aminoquinazolin-4(3H)-one, is researched, Molecular C8H7N3O, CAS is 20198-19-0, about Combined distance geometry analysis of dihydrofolate reductase inhibition by quinazolines and triazines.

QSAR anal. of triazines I (R = H, Br, F, I, Me, MeO, CF3, PhCH2O, etc.) and quinazolines II R = H, OH, SH, H2N, AcNH, Me, etc.; n = 1-3) as inhibitors of rat liver dihydrofolate reductase  [9002-03-3] using distance geometry anal. is described. The model was applied to predict the biol. activity of 91 compounds The predicted values showed a root mean square deviation of 0.907 and a correlation coefficient of 0.790. The distance geometry model for the dihydrofolate reductase inhibition is unique in its ability to fit 3 different sets of mols. (3′- and 4′-substituted phenyltriazines and quinazolines) in the same model, and successfully predicts the biol. activity of the compounds

As far as I know, this compound(20198-19-0)Electric Literature of C8H7N3O can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 1,2-Bis(diphenylphosphino)ethane( cas:1663-45-2 ) is researched.Application of 1663-45-2.Faujdar, Hemlata; Spannenberg, Anke; Kaur-Ghumaan, Sandeep published the article 《Structural and HER studies of diphosphine-monothiolate complexes [Fe2(CO)4(μ-naphthalene-2-thiolate)2(μ-dppe)] and [Fe2(CO)4(μ-naphthalene-2-thiolate)2(μ-DPEPhos)]》 about this compound( cas:1663-45-2 ) in Inorganica Chimica Acta. Keywords: iron diphosphine thiolate complex preparation crystal structure cyclic voltammetry; hydrogen evolution reaction catalyst iron diphosphine thiolate complex. Let’s learn more about this compound (cas:1663-45-2).

Two new compounds [Fe2(CO)4(μ-naphthalene-2-thiolate)2(μ-dppe)] 1 and [Fe2(CO)4(μ-naphthalene-2-thiolate)2(μ-DPEPhos)] 2 with chelating phosphine ligands were synthesized and characterized {dppe = 1,2-Bis(diphenylphosphino)ethane and DPEPhos = (Oxydi-2, 1-phenylene)bis(diphenylphosphine)}. The bridging coordination mode of the diphosphine ligand in complex 1 was confirmed by x-ray crystallog. Complexes 1 and 2 were further evaluated as catalysts for the hydrogen evolution reaction (HER) by electrochem. studies. Complex 1 showed better stability whereas complex 2 degraded in the presence of acids.

As far as I know, this compound(1663-45-2)Application of 1663-45-2 can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 14389-12-9, is researched, Molecular C6H5N5, about Safe and fast tetrazole formation in ionic liquids, the main research direction is carbonitrile azide cycloaddition ionic liquid; tetrazole preparation; ionic liquid cycloaddition solvent.Computed Properties of C6H5N5.

The [2 + 3]-cycloaddition of nitriles and azides is reliable for intramol. reactions, but the hazards with volatile azides in intermol. reactions are tremendous. Zinc catalysis in aqueous solution is a magnificent improvement, but requires the removal of the zinc salts from the acidic product. The use of safe solvents featuring low vapor pressure and good solubility of NaN3, is reported. Ionic liquids based on alkylated imidazoles combined with microwave heating turned out to be a solution for the given tasks.

As far as I know, this compound(14389-12-9)Computed Properties of C6H5N5 can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis