Month: April 2022

Product Details of 14389-12-9. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 5-(4-Pyridyl)-1H-tetrazole, is researched, Molecular C6H5N5, CAS is 14389-12-9, about Zinc chloride-catalyzed synthesis of 5-substituted 1H-tetrazoles under solvent free condition. Author is Rostamizadeh, Shahnaz; Ghaieni, Hamid; Aryan, Reza; Amani, Ali.

Zinc chloride is an efficient and safe catalyst in the [3 + 2] cycloaddition reaction of organic nitriles with sodium azide in solventless condition. The corresponding 5-substituted 1H tetrazoles were obtained under mild conditions. This method can overcome disadvantages such as: the use of toxic metals and expensive reagents, drastic reaction conditions, water sensitivity and the presence of dangerous hydrazoic acid.

The article 《Zinc chloride-catalyzed synthesis of 5-substituted 1H-tetrazoles under solvent free condition》 also mentions many details about this compound(14389-12-9)Product Details of 14389-12-9, you can pay attention to it, because details determine success or failure

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. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 5-(4-Pyridyl)-1H-tetrazole, is researched, Molecular C6H5N5, CAS is 14389-12-9, about Expanded perlite: an inexpensive natural efficient heterogeneous catalyst for the green and highly accelerated solvent-free synthesis of 5-substituted-1H-tetrazoles using [bmim]N3 and nitriles. Author is Jahanshahi, Roya; Akhlaghinia, Batool.

A versatile, green and highly accelerated protocol for preparing 5-substituted-1H-tetrazoles was reported. In this method, 5-substituted-1H-tetrazoles were synthesized from nitriles and [bmim]N3, in the presence of the expanded perlite as an inexpensive natural efficient heterogeneous catalyst, under solvent-free condition. A wide variety of aryl nitriles underwent [3+2] cycloaddition to afford the desired tetrazoles in good to excellent yields, rapidly. This method had the advantages of high yields, short reaction times, simple methodol. and easy work-up. The catalyst was recovered by simple filtration and reused delivering good yields.

The article 《Expanded perlite: an inexpensive natural efficient heterogeneous catalyst for the green and highly accelerated solvent-free synthesis of 5-substituted-1H-tetrazoles using [bmim]N3 and nitriles》 also mentions many details about this compound(14389-12-9)Category: chiral-nitrogen-ligands, you can pay attention to it, because details determine success or failure

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

Wang, Fei; Zhang, Jian; Yu, Rongmin; Chen, Shu-Mei; Wu, Xiao-Yuan; Chen, Shan-Ci; Xie, Yi-Ming; Zhou, Wei-Wei; Lu, Can-Zhong published the article 《Topological derivation from centrosymmetry to noncentrosymmetry in a three-dimensional polar framework material》. Keywords: copper bromo pyridyltetrazole polymeric complex preparation SHG.They researched the compound: 5-(4-Pyridyl)-1H-tetrazole( cas:14389-12-9 ).SDS of cas: 14389-12-9. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:14389-12-9) here.

Strong second harmonic generation (SHG) response was presented by a three-dimensional polar framework material [Cu2(L)Br]n (1; HL = 5-(4-pyridyl)tetrazole), which was obtained by reacting CuBr with HL under solvothermal conditions and displayed an noncentrosym. (3,4)-connected topol. derived from the centrosym. CdSO4 net.

The article 《Topological derivation from centrosymmetry to noncentrosymmetry in a three-dimensional polar framework material》 also mentions many details about this compound(14389-12-9)SDS of cas: 14389-12-9, you can pay attention to it, because details determine success or failure

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

Product Details of 14389-12-9. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 5-(4-Pyridyl)-1H-tetrazole, is researched, Molecular C6H5N5, CAS is 14389-12-9, about Hydrothermal Preparation of Novel Cd(II) Coordination Polymers Employing 5-(4-Pyridyl)tetrazolate as a Bridging Ligand. Author is Xue, Xiang; Wang, Xi-Sen; Wang, Li-Zhong; Xiong, Ren-Gen; Abrahams, Brendan F.; You, Xiao-Zeng; Xue, Zi-Ling; Che, Chi-Ming.

The reaction of 4-cyanopyridine with NaN3 in the presence of H2O and a Lewis acid (CdCl2) affords a novel 3-dimensional pillared-layered fluorescent and phosphorescent coordination polymer Cd3(OH)2Cl2(4-PTZ)2 (4-PTZ = 5-(4-pyridyl)tetrazolate) (1) while the direct reaction of CdCl2 with H-PTZ gives the simpler species Cd(4-PTZ)2(H2O)2. The solid-state structure and nature of 1 provide an indication of the type of materials that may be formed as intermediates in the Sharpless-Demko reaction for the generation of 5-substituted 1H-tetrazoles.

The article 《Hydrothermal Preparation of Novel Cd(II) Coordination Polymers Employing 5-(4-Pyridyl)tetrazolate as a Bridging Ligand》 also mentions many details about this compound(14389-12-9)Product Details of 14389-12-9, you can pay attention to it, because details determine success or failure

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

Wen, Xiaojin; Li, Xinyao; Luo, Xiao; Wang, Weijin; Song, Song; Jiao, Ning published an article about the compound: 1,5-Dibromopentane( cas:111-24-0,SMILESS:BrCCCCCBr ).Product Details of 111-24-0. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:111-24-0) through the article.

The intramol. Csp3-H and/or C-C bond amination was very important in modern organic synthesis due to its efficiency in the construction of diversified N-heterocycles. A novel intramol. cyclization of alkyl azides for the synthesis of cyclic imines I [Ar = Ph, 4-MeC6H4, 4-OMeC6H4, etc.; R = H, 2-Me, 2-Et, etc.] and tertiary amines II [n = 1, 2] through selective Csp3-H and/or C-C bond cleavage was reported. Two C-N single bonds or a C=N double bond were efficiently constructed in these transformations. The carbocation mechanism differed from the reported metal nitrene intermediates and therefore enabled metal-free and new transformation.

The article 《Intramolecular Csp3-H/C-C bond amination of alkyl azides for the selective synthesis of cyclic imines and tertiary amines》 also mentions many details about this compound(111-24-0)Product Details of 111-24-0, you can pay attention to it or contacet with the author([email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]) to get more 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

Synthetic Route of C5H10Br2. 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: 1,5-Dibromopentane, is researched, Molecular C5H10Br2, CAS is 111-24-0, about Kinetic study of the metal-dipeptide complex with ninhydrin facilitated by gemini (m-s-m) surfactant micelles.

The three Gemini (m-s-m; m (head group) = 16 and s (spacer) = 4, 5, 6) surfactants have been synthesized and their impact on reaction of zinc(II)-glycylleucine complex ([Zn(II)-Gly-Leu]+) and ninhydrin were studied at temperature (343 K) and pH (5.0) using spectroscopic method. Influence of several factors, viz., [Zn(II)-Gly-Leu]+, [ninhydrin], temperature and pH were also carried out on title reaction in geminis. Rates of reaction are the first-order path in concentration of [Zn(II)-Gly-Leu]+ complex and fractional order path in concentration of ninhydrin. The catalysis of gemini 16-s-16 surfactant micelles was investigated below and above their critical micelle concentration (cmc) value and detailed elaboration were provided in the text. In the present case, rate constants, kψ, increased on increasing geminis ([gemini] are below their cmc, region I) and stayed nearly constant (region II). The shape of (region I and II) surfactants ([gemini] = 0 to 400 × 10-5 mol dm-3) are similar to a cetyltrimethylammonium bromide, CTAB (single hydrophilic head group and hydrophobic part). Later, a sharp increment in rate was observed with higher [gemini] (region III, (Fig. 5)). The study was catalyzed and accelerated quite enough by geminis (at concentrations below their cmc) compared to aqueous An appropriate mechanism has been proposed for accounting for the distribution of reactants between aqueous and micellar pseudo phases. Resulting kinetic data were used to determine the binding constants of micelle-substrate (KB) and micelle-ninhydrin (KNin).

The article 《Kinetic study of the metal-dipeptide complex with ninhydrin facilitated by gemini (m-s-m) surfactant micelles》 also mentions many details about this compound(111-24-0)Synthetic Route of C5H10Br2, you can pay attention to it or contacet with the author([email protected]) to get more 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

Synthetic Route of C30H21P. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Tri(naphthalen-1-yl)phosphine, is researched, Molecular C30H21P, CAS is 3411-48-1, about Regioselective Palladium-Catalyzed Formate Reduction of N-Heterocyclic Allylic Acetates. Author is Cheng, Hsiu-Yi; Sun, Chong-Si; Hou, Duen-Ren.

The regioselective palladium-catalyzed formate reduction of allylic acetates in five- to eight-membered heterocycles is reported. Reduction of allylic acetates under mild conditions using allylpalladium chloride dimer, phosphines, and formic acid/triethylamine in DMF gave the exo-cyclic olefins in good regioselectivities and high yields. Synthetic application in preparing N-tosyl-3-oxo-piperidine is also reported.

The article 《Regioselective Palladium-Catalyzed Formate Reduction of N-Heterocyclic Allylic Acetates》 also mentions many details about this compound(3411-48-1)Synthetic Route of C30H21P, you can pay attention to it, because details determine success or failure

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

Name: 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 Study of Reaction Rate between Zinc(II)-Histidine [Zn(II)-his]+ Complex and Ninhydrin: Effect of Three Dicationic Gemini (Alkanediyl-α,ω-Type) Surfactants. Author is Kumar, Dileep; Rub, Malik Abdul.

Reaction rate between Zn(II)-histidine and ninhydrin in three dicationic gemini (alkanediyl-α,ω-type) surfactants has been investigated at 343 K by spectroscopic methods. The first- and fractional-order dependencies of the reaction rate on concentration of [Zn(II)-his]+ complex and ninhydrin, resp., have been detected. Critical micellar concentrations of pure surfactants and their mixtures were determined with the help of conductometry. Effects of all three gemini (alkanediyl-α,ω-type) surfactants on the rate at different concentrations were studied.

The article 《Study of Reaction Rate between Zinc(II)-Histidine [Zn(II)-his]+ Complex and Ninhydrin: Effect of Three Dicationic Gemini (Alkanediyl-α,ω-Type) Surfactants》 also mentions many details about this compound(111-24-0)Name: 1,5-Dibromopentane, you can pay attention to it, because details determine success or failure

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

Mueller, Thomas E.; Choi, Sam Wing-Kin; Mingos, D. Michael P.; Murphy, Don; Williams, David J.; Yam, Vivian Wing-Wah published the article 《Synthesis, structural characterization and photophysical properties of ethyne-gold(I) complexes》. Keywords: crystal structure ethyne gold complex; mol structure ethyne gold complex; UV ethyne gold complex; luminescence ethyne gold complex.They researched the compound: Tri(naphthalen-1-yl)phosphine( cas:3411-48-1 ).Product Details of 3411-48-1. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:3411-48-1) here.

Closely related ethynyl-Au(I) complexes were synthesized by reaction of Au(PR3)Cl with an alk. solution of the ethyne. The mol. structures of the ethynediyl-digold complexes NpPh2PAuCCAuPNpPh2·2CHCl3 (1) (Np = naphthyl), Np2PhPAuCCAuPNp2Ph·6CHCl3 (2) and Fc2PhPAuCC-AuPFc2Ph·4EtOH (3) (Fc = ferrocenyl) and the phenylethynyl-Au complex Fc2PhPAuCC-Ph (4) were determined by single-crystal x-ray diffraction measurements. Variation of the phosphines does not have a significant influence on the bonding in the central P-Au-CC unit, the Au-P and Au-C distances being in the ranges 2.274(4)-2.289(5) and 1.983(8)-2.002(6) Å, resp. Although none of the compounds have short Au…Au contacts, compounds 1 and 2 do show novel C-H…π interactions between the proton of CHCl3 and the π-electron system of the CC bond. In 1, pairs of CHCl3 mols. are located with their protons 2.4 Å from the center of the CC bond with the C-H bond directed orthogonally towards the center of the ethyne bond. In 2, two pairs of CHCl3 mols. are located around the CC bond, with 2.5 Å between the proton and the center of the triple bond, resulting in a pseudo-octahedral arrangement around CC. In addition to the C-H…π interactions, the structures of 1 and 2 also show a range of intermol. aromatic-aromatic interactions. The 1st structural determination of naphthylphosphines resulted in estimates of their steric requirements. The UV-visible spectra of CH2Cl2 solutions of the ethynediyl compounds exhibit intense absorption bands at ∼300 nm assignable to intraligand transitions. Excitation of solid sample or fluid solution of complex 1 at λ>330 nm resulted in intense long-lived luminescence. Excitation of a solution of 2 at 350 and 380 nm led to different types of photoluminescence.

The article 《Synthesis, structural characterization and photophysical properties of ethyne-gold(I) complexes》 also mentions many details about this compound(3411-48-1)Product Details of 3411-48-1, you can pay attention to it, because details determine success or failure

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 natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 111-24-0, is researched, SMILESS is BrCCCCCBr, Molecular C5H10Br2Journal, Article, Chemistry – A European Journal called Realization of an Asymmetric Non-Aqueous Redox Flow Battery through Molecular Design to Minimize Active Species Crossover and Decomposition, Author is Shrestha, Anuska; Hendriks, Koen H.; Sigman, Mathew S.; Minteer, Shelley D.; Sanford, Melanie S., the main research direction is asym redox flow battery mol design; active specie crossover decomposition minimization; anolyte decomposition; asymmetric; crossover; non-aqueous; redox flow batteries.Reference of 1,5-Dibromopentane.

This communication presents a mechanism-based approach to identify organic electrolytes for non-aqueous redox flow batteries (RFBs). Sym. flow cell cycling of a pyridinium anolyte and a cyclopropenium catholyte resulted in extensive capacity fade due to competing decomposition of the pyridinium species. Characterization of this decomposition pathway enabled the rational design of next-generation anolyte/catholyte pairs with dramatically enhanced cycling performance. Three factors were identified as critical for slowing capacity fade, separating the anolyte-catholyte in an asym. flow cell using an anion exchange membrane (AEM), moving from monomeric to oligomeric electrolytes to limit crossover through the AEM, and removing the basic carbonyl moiety from the anolyte to slow the protonation-induced decomposition pathway. Ultimately, these modifications led to a novel anolyte-catholyte pair that can be cycled in an AEM-separated asym. RFB for 96 h with > 95 % capacity retention at an open circuit voltage of 1.57 V.

After consulting a lot of data, we found that this compound(111-24-0)Reference of 1,5-Dibromopentane can be used in many types of reactions. And in most cases, this compound has more advantages.

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