Category: chiral-nitrogen-ligands

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

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

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

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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 1,2-Bis(diphenylphosphino)ethane(SMILESS: P(CCP(C1=CC=CC=C1)C2=CC=CC=C2)(C3=CC=CC=C3)C4=CC=CC=C4,cas:1663-45-2) is researched.Product Details of 14389-12-9. The article 《Synthesis and Structural Characterization of Palladium(II) Mixed-Ligand Complexes of N-(Benzothiazol-2-yl)benzamide and 1,2-Bis(diphenylphosphino)ethane》 in relation to this compound, is published in Inorganic Chemistry. Let’s take a look at the latest research on this compound (cas:1663-45-2).

Three novel palladium(II) mixed-ligand complexes of N-(benzothiazol-2-yl)benzamide (HL) and 1,2-bis(diphenylphosphino)ethane (dppe), [Pd(HL)(dppe)]Cl2 (1), [Pd(L)(dppe)]Cl (2), and [Pd(L)2(dppe)] (3), were synthesized and fully characterized using Fourier transform IR, 1H, 13C, and 31P NMR, and molar conductivity measurements. Complex 3 was characterized by single-crystal X-ray diffraction. The ligand HL showed three different coordination modes: a neutral bidentate chelate bound through the endocyclic nitrogen and exocyclic oxygen atoms in 1, a neg. charged L bound as a bidentate chelate through the endocyclic nitrogen and neg. charged exocyclic oxygen atoms in 2, and a monodentate bound through the neg. charged endocyclic nitrogen atom in 3.

The article 《Synthesis and Structural Characterization of Palladium(II) Mixed-Ligand Complexes of N-(Benzothiazol-2-yl)benzamide and 1,2-Bis(diphenylphosphino)ethane》 also mentions many details about this compound(1663-45-2)HPLC of Formula: 1663-45-2, 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 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, ACS Catalysis called Synthesis of Phosphinines from CoII-Catalyzed [2+2+2] Cycloaddition Reactions, Author is Glaesel, Tim; Jiao, Haijun; Hapke, Marko, 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, Name: 1,2-Bis(diphenylphosphino)ethane.

The CoII-catalyzed [2+2+2] cycloaddition of functionalized diynes and phosphaalkynes resulting in the formation of an array of structurally interesting phosphinines is reported. A combination of 1,2-bis(diphenylphosphino)benzene (dppbenz) and CoI2 turned out to be the most suitable and active catalyst system under microwave reaction conditions. Chemoselective cyclizations of phosphaalkynes in the presence of nitriles have been observed, and a number of carbonyl functionalities are tolerated as well. The reaction can successfully be conducted with a 1:1 ratio of phosphaalkyne/diyne substrate. Model reactions with benzonitrile and diyne demonstrated that CoII catalysts in the presence of bisphosphines prefer carbocyclization, while reduction to lower oxidation states promotes heterocyclization to the corresponding pyridine. A reaction mechanism comprising a CoII oxidation state for the cyclotrimerization process is proposed and rationalized based on control experiments and theor. calculations

After consulting a lot of data, we found that this compound(1663-45-2)Name: 1,2-Bis(diphenylphosphino)ethane 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

Application In Synthesis of 2-Aminoquinazolin-4(3H)-one. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2-Aminoquinazolin-4(3H)-one, is researched, Molecular C8H7N3O, CAS is 20198-19-0, about Identification of the main nitrogen-containing compounds in Ctenopharyngodon idellus by HPLC-Q-TOF-MS. Author is Zhang, You-sheng; Huang, Jia-si; Liu, Xue-ming; Cheng, Jing-rong; Chen, Zhi-yi; Zhang, Ye-hui.

The main nitrogenous compounds in methanol extracts of Ctenopharyngodon idellus were analyzed and identified using high-performance liquid chromatog. coupled with quadrupole time-of-flight mass spectrometry (HPLC-Q-TOF-MS). Both pos. and neg. ionization modes were used to confirm the related chem. compounds and their characteristic fragment ions according to the accurate mol. mass information of the excimer ion peaks and the fragment ions. Using the ChemSpider database, 33 nitrogenous compounds in Ctenopharyngodon idellus were ultimately determined, and the data for the main fragments of each component were analyzed. These 33 nitrogenous compounds included 11 amino acids (eight types of α-amino acids), 12 amines, eight amide compounds, and two heterocyclic nitrogenous compounds The results showed that the structures of monomer compounds in fresh aquatic products and raw materials could be elucidated directly using the HPLC-Q-TOF-MS technique and fragmentation anal. by mass spectrometry, which can improve the efficiency of anal. and identification of chem. components in fresh raw material. This study shows that these techniques are conducive for the identification and anal. of active components and newly generated compounds during the storage of fresh raw materials.

After consulting a lot of data, we found that this compound(20198-19-0)Application In Synthesis of 2-Aminoquinazolin-4(3H)-one 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

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Electronic spectra of N-heteroaromatic systems. I. The n-π transitions of monocyclic azines》. Authors are Mason, S. F..The article about the compound:2-Aminoquinazolin-4(3H)-onecas:20198-19-0,SMILESS:O=C1NC(N)=NC2=C1C=CC=C2).Synthetic Route of C8H7N3O. Through the article, more information about this compound (cas:20198-19-0) is conveyed.

The positions and the intensities of the band in the visible and the ultraviolet spectra of monocyclic azines owing to the promotion of an electron from a lone-pair N orbital to a π-orbital of the ring have been measured in the vapor phase and in solution in cyclohexane (I) and H2O. The frequency of the band is determined primarily by the energy of the benzene-like lowest unoccupied π orbital of the azine and by groundstate interaction between lone-pair orbitals on different N atoms. The intensities of the n → π bands of the azines increase with the “”s”” character of the lone-pair N orbitals, but the frequencies of the bands are not greatly affected, owing to orbital-following in the transition. The frequencies (ν) in vapor, νmaximum in I, νmaximum in H2O, all oscillator strength (f) in I, and pKα are given for pyridine, pyrimidine, pyrazine, pyridazine, sym-triazine, 3,5,6-trimethyl-1,2,4-triazine, m-tetrazine.

After consulting a lot of data, we found that this compound(20198-19-0)Synthetic Route of C8H7N3O 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

HPLC of Formula: 3411-48-1. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Tri(naphthalen-1-yl)phosphine, is researched, Molecular C30H21P, CAS is 3411-48-1, about Rhodium catalyzed hydroformylation assisted by cyclodextrins in biphasic medium: Can sulfonated naphthylphosphanes lead to active, selective and recyclable catalytic species?. Author is Elard, Maxime; Denis, Julien; Ferreira, Michel; Bricout, Herve; Landy, David; Tilloy, Sebastien; Monflier, Eric.

New sulfonated naphthylphosphanes having an average sulfonation degree around 2 were synthesized and tested as ligand in the aqueous biphasic Rh-catalyzed hydroformylation of 1-decene assisted by randomly methylated β-cyclodextrins. All these water-soluble phosphanes associated to a rhodium precursor were able to perform aqueous hydroformylation of 1-decene. The best results in terms of catalyst recovery and recycling were obtained with sulfonated 2-naphthylphosphanes. With sulfonated 1-naphthylphosphanes, formation of low-coordinated catalytic species leading to a catalyst leaching in the organic phase was postulated. These results were rationalized by considering that sulfonated 1-naphthylphosphanes are bulkier ligands than sulfonated 2-naphthylphosphanes.

After consulting a lot of data, we found that this compound(3411-48-1)HPLC of Formula: 3411-48-1 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

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called 6-Chloro-N-(pyridin-4-ylmethyl)pyridine-3-sulfonamide, published in 2013-12-31, which mentions a compound: 6684-39-5, mainly applied to crystal structure chloropyridinylmethylpyridinesulfonamide; mol structure chloropyridinylmethylpyridinesulfonamide; hydrogen bond chloropyridinylmethylpyridinesulfonamide, COA of Formula: C5H3Cl2NO2S.

In 6-chloro-N-(pyridin-4-ylmethyl)pyridine-3-sulfonamide, C11H10ClN3O2S, the dihedral angle between the pyridine rings is 46.85(12)°. The N atom of the chloropyridine ring is anti to the N-H bond. In the crystal, mols. are linked through N-H···N H bonds into zigzag chains parallel to [001] with a C(7) graph-set motif. Crystallog. data are given.

After consulting a lot of data, we found that this compound(6684-39-5)COA of Formula: C5H3Cl2NO2S 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