Month: April 2022

Electric Literature of C5H10Br2. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 1,5-Dibromopentane, is researched, Molecular C5H10Br2, CAS is 111-24-0, about Hybrid bromobismuthates: Synthesis, thermal stability and crystal structure of multicharged 3-ammoniopyridinium derivatives. Author is Kotov, Vitalii Yu.; Buikin, Petr A.; Simonenko, Nikolay P.; Ilyukhin, Andrey B..

Five new derivatives of 3-ammoniopyridine, namely, 1,1′-(1,4-phenylenebis(methylene))bis (3-ammoniopyridinium) bromobismuthate-bromide [(3-NH3Py)2XK][BiBr6]Br·H2O (1), 3-amino-1-(3-(3-ammoniopyridin-1-ium-1-yl)propyl)pyridin-1-ium bromobismuthate [(3-NH2Py)(3-NH3Py)C3][BiBr6]·1.5H2O (2), 1,1′-(butane-1,1′-diyl)bis(3-ammoniopyridinium) bromobismuthate [(3-NH3Py)2C4][Bi2Br10] (3) and bromide [(3-NH3Py)2C4]Br4·2H2O (4), and 3-amino-1-(5-(3-ammoniopyridin-1-ium-1-yl)pentyl)pyridin-1-ium bromobismuthate [(3-NH2Py)(3-NH3Py)C5][BiBr6]·H2O (5), were successfully obtained from concentrated HBr solutions and characterized by single crystal X-Ray diffraction, XRD, DRS, and TG/DTA methods. All compounds are unstable and decompose slowly in humid air. According to DFT calculations the protonation of the amino group results in the increase of the electron affinity of the organic cation and leads to changes in the structure of the aminopyridine fragment of the cation. The C-NHn bond length values in 3-aminopyridinium (<1.40 Å) and in 3-ammoniopyridinium (≥1.44 Å) derivatives allows to uniquely determine the protonation degree of the N atom. From this literature《Hybrid bromobismuthates: Synthesis, thermal stability and crystal structure of multicharged 3-ammoniopyridinium derivatives》,we know some information about this compound(111-24-0)Electric Literature of C5H10Br2, but this is not all information, there are many literatures related to this compound(111-24-0).

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 chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 2-Aminoquinazolin-4(3H)-one, is researched, Molecular C8H7N3O, CAS is 20198-19-0, about Efficient Cu-catalyzed synthesis of 2-amino-4(3H)-quinazolinone and 2-aminoquinazoline derivatives, the main research direction is halo aryl carbonyl guanidine cyclization copper catalyst; quinazolinamine preparation; quinazolinone amino preparation.Related Products of 20198-19-0.

A versatile and efficient method for the Cu-catalyzed synthesis of both 2-amino-4(3H)-quinazolinones and -quinazolines was developed. The protocol uses readily available substituted 2-halobenzoates, 2-BrC6H4CHO, 2-bromophenyl ketones, and guanidines as starting materials, inexpensive CuI as the catalyst, and has important application values for the construction of N-heterocycles.

From this literature《Efficient Cu-catalyzed synthesis of 2-amino-4(3H)-quinazolinone and 2-aminoquinazoline derivatives》,we know some information about this compound(20198-19-0)Related Products of 20198-19-0, but this is not all information, there are many literatures related to this compound(20198-19-0).

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: 1663-45-2, is researched, Molecular C26H24P2, about A Geometrically Constrained Tricyclic Phosphine: Coordination, Ring Expansion by Insertion of CO into a P-C Bond, and Lewis Acid Initiated Formation of an Oligocyclic Molecule with a P2C22 backbone, the main research direction is molybdenum carbonyl tricyclic phosphine preparation crystal structure; tungsten carbonyl tricyclic phosphine preparation crystal structure; chromium carbonyl tricyclic phosphine preparation crystal structure; aluminum tricyclic phosphine oligocyclic barrelane preparation crystal structure; crystal structure molybdenum chromium tungsten tricyclic phosphine aluminum barrelane; mol structure molybdenum chromium tungsten tricyclic phosphine aluminum barrelane.Recommanded Product: 1663-45-2.

The geometrically constrained tricyclic phosphine 3b has two annulated five-membered PC4 heterocycles with the P atom in a bridgehead position. Treatment with (THF)M(CO)5 (M = Cr, Mo, and W) afforded M(CO)5 complexes 4-6, of which the Cr and Mo compounds showed in heat the unusual insertion of a carbonyl C atom into a P-C bond of one of the strained PC4 rings. Ring expansion yielded a six-membered PC5 heterocycle with an exocyclic C:O group and afforded new phosphine ligand 8 that contains annulated five- (1x) and six-membered (2x) rings. Its Mo complex (7) was obtained by treatment of starting phosphine 3b with excess Mo(CO)6 in hot toluene. Phosphine 8 was removed from the metal atom by addition of the diphosphine Ph2PC2H4PPh2. Treatment of 8 with AlBr3 resulted in enolization and an increased nucleophilicity of the β-C atom, which causes dimerization by P-C bond formation to yield a barrelane type mol. (9).

From this literature《A Geometrically Constrained Tricyclic Phosphine: Coordination, Ring Expansion by Insertion of CO into a P-C Bond, and Lewis Acid Initiated Formation of an Oligocyclic Molecule with a P2C22 backbone》,we know some information about this compound(1663-45-2)Recommanded Product: 1663-45-2, but this is not all information, there are many literatures related to this compound(1663-45-2).

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

Safety of 1,2-Bis(diphenylphosphino)ethane. 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: 1,2-Bis(diphenylphosphino)ethane, is researched, Molecular C26H24P2, CAS is 1663-45-2, about A Series of Mixed-Ligand Cu(I) Complexes Comprising Diphosphine-Disulfide Ligands: Effects of Diphosphine Ligands on Luminescent Properties. Author is Yamazaki, Yasuomi; Tsukuda, Toshiaki; Furukawa, Shota; Dairiki, Ayumi; Sawamura, Shota; Tsubomura, Taro.

Mixed-ligand Cu(I) complexes have attracted attention as alternatives to the noble- and/or rare-metal complexes, because of their remarkable photofunctions. To develop mixed-ligand Cu(I) complexes with rich photofunctions, an investigation of a suitable combination of ligands has captured more and more research interests. Herein, we report the first examples of emissive heteroleptic diphosphine-disulfide Cu(I) complexes combined with diphosphine ligands. The systematic study using a series of diphosphine ligands revealed that large π-conjugated bridging moieties between the two P atoms in the diphosphine ligands result in higher light-emission performance. When the diphosphine ligand was (R)-BINAP ((R)-BINAP = (R)-(+)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl), the Cu(I) complex had an emission quantum yield (Φem) of 0.13 and a long emission lifetime (τem = 118μs). Luminescent diphosphine-disulfide Cu(I) complexes were successfully synthesized by combining with diphosphine ligands that had large π-conjugated bridging moieties.

From this literature《A Series of Mixed-Ligand Cu(I) Complexes Comprising Diphosphine-Disulfide Ligands: Effects of Diphosphine Ligands on Luminescent Properties》,we know some information about this compound(1663-45-2)Safety of 1,2-Bis(diphenylphosphino)ethane, but this is not all information, there are many literatures related to this compound(1663-45-2).

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

Related Products of 14389-12-9. 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: 5-(4-Pyridyl)-1H-tetrazole, is researched, Molecular C6H5N5, CAS is 14389-12-9, about A New Main Group Metal Coordination Polymer: Synthesis, Structure, and Dielectric Constant Property of [Na(C6H4N5)(H2O)2]n. Author is Fu, Da-Wei; Ge, Jia-Zhen; Zhang, Yi; Ye, Heng-Yun.

The reaction of NaOH with 4-(2H-tetrazol-5-yl)pyridine affords the first tetrazole-pyridine sodium coordination polymer with chain structure, [Na(C6H4N5)(H2O)2]n (1). The compound could be characterized by single-crystal x-ray diffraction anal. The temperature dependence of dielec. permittivity remains unchanged almost within the measured temperature range of 80 K to 270 K at 1 MHz, and the frequency dependence of the permittivity showed rapidly drops from 31.5 to 4.3 within the measured frequency range of 200 to 1 MHz at room temperature

From this literature《A New Main Group Metal Coordination Polymer: Synthesis, Structure, and Dielectric Constant Property of [Na(C6H4N5)(H2O)2]n》,we know some information about this compound(14389-12-9)Related Products of 14389-12-9, but this is not all information, there are many literatures related to this compound(14389-12-9).

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

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Tri(naphthalen-1-yl)phosphine, is researched, Molecular C30H21P, CAS is 3411-48-1, about Interface chemistry of organophosphorus compounds. II. Spreading behavior of aromatic, mixed aromatic-n-aliphatic, aromatic-cycloaliphatic, or aliphatic-cycloaliphatic phosphines.SDS of cas: 3411-48-1.

The aromatic phosphines, PRR21 (I), where R, R1 = Ph, α- or β-naphthyl, p-biphenylyl, or anthryl), or their oxides do not form monolayers at the air/H2O interface, due to the electron withdrawing character of the aromatic rings, which makes the free electron pair of P unavailable for solvation. The introduction of Me as an electron repelling group, as in tri-p-tolylphosphine, leads to the formation of multimol. films. The mol. area of the nonspreading I (R = R1 = Ph) (Ia) was determined from the increase in area caused by the addition of Ia to the spreading I (R = R1 = n-C8H17). The mol. of Ia is pyramidal in the mixed films. The spreading properties of mixed I, where R, R1 = aliphatic or aromatic., are a combination of the properties of the individual I, where R = R1 = aliphatic or aromatic. I (R = R1 = cyclohexyl) (Ib) forms real gas-analogous films. The observed mol. area is smaller than the calculated area, due to the bulky structure of the cyclohexyl groups. Replacement of 1-2 cyclohexyl groups with aliphatic or aromatic groups results in improvement or deterioration resp. of the spreading properties of the phosphines.

From this literature《Interface chemistry of organophosphorus compounds. II. Spreading behavior of aromatic, mixed aromatic-n-aliphatic, aromatic-cycloaliphatic, or aliphatic-cycloaliphatic phosphines》,we know some information about this compound(3411-48-1)SDS of cas: 3411-48-1, but this is not all information, there are many literatures related to this compound(3411-48-1).

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: 20198-19-0, is researched, SMILESS is O=C1NC(N)=NC2=C1C=CC=C2, Molecular C8H7N3OJournal, Chemical Physics called Electronic spectra of some pterins and deazapterins, Author is Wormell, Paul; Gready, Jill E., the main research direction is electron spectra pterin deazapterin; tautomerism electron spectra pterin deazapterin; protonation electron spectra pterin deazapterin.COA of Formula: C8H7N3O.

The electronic absorption spectra of some derivatives of pterin and N5-deazapterin are analyzed using the CNDO/S-CI method, including allowance for solvent shifts. These calculations give good agreement with the spectra, which may be assigned to a group of π*←π transitions. There are some differences between calculated values for gas-phase and solution models but their general level of conformity with experiment is similar. Band shifts caused by Me substitution, protonation and replacement of ring nitrogens are investigated, and a number of structural and spectroscopic problems are addressed. The spectral predictions agree well with exptl. assignments for tautomeric forms and protonation sites for known compounds, and predictions are made for the spectra of N8-deazapterin and N5,N8-dideazapterin which have not been reported.

From this literature《Electronic spectra of some pterins and deazapterins》,we know some information about this compound(20198-19-0)COA of Formula: C8H7N3O, but this is not all information, there are many literatures related to this compound(20198-19-0).

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, Cun-Kuan; Li, Xiao-Yan published an article about the compound: 5-(4-Pyridyl)-1H-tetrazole( cas:14389-12-9,SMILESS:C1(C2=NN=NN2)=CC=NC=C1 ).Category: chiral-nitrogen-ligands. 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:14389-12-9) through the article.

The title three-dimensional coordination polymer, [Cu2Cl(C6H4N5)]n, is the product of the hydrothermal reaction of CuCl2·2H2O and 5-(4-pyridyl)-1H-tetrazole (4-Hptz). The two independent CuI ions are coordinated in distorted tetrahedral and distorted trigonal coordination environments. In the unique 5-(4-pyridyl)-1H-tetrazolate ligand, the dihedral angle between the pyridine and tetrazole rings is 17.3 (2)°. Crystallog. data are given.

From this literature《Poly[μ-chlorido-[μ4-5-(4-pyridyl)tetrazolato]dicopper(I)]》,we know some information about this compound(14389-12-9)Category: chiral-nitrogen-ligands, but this is not all information, there are many literatures related to this compound(14389-12-9).

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: 2-Chloro-5-pyridinesulfonyl chloride. 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-Chloro-5-pyridinesulfonyl chloride, is researched, Molecular C5H3Cl2NO2S, CAS is 6684-39-5, about Aqueous Process Chemistry: The Preparation of Aryl Sulfonyl Chlorides.

The use of aqueous acidic conditions for the preparation of arylsulfonyl chlorides from diazonium salts in the presence of copper salts, preferably CuCl, together with thionyl chloride as the sulfur dioxide source, has considerable advantages over recommended literature procedures, whereby reactions are carried out in acetic acid with minimization of water content of the solvent. The method was successful for a wide range of electron-deficient and electron-neutral aryl substrates. The sulfonyl chlorides are protected from hydrolysis by their low solubility in water, which results in direct precipitation from the reaction mixture in good yields (>70%) and high strength (>98% weight/weight). The aqueous process, which is addnl. safer and more robust, can be readily scaled up and has significant environmental benefits.

From this literature《Aqueous Process Chemistry: The Preparation of Aryl Sulfonyl Chlorides》,we know some information about this compound(6684-39-5)Name: 2-Chloro-5-pyridinesulfonyl chloride, but this is not all information, there are many literatures related to this compound(6684-39-5).

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

COA of Formula: C5H10Br2. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 1,5-Dibromopentane, is researched, Molecular C5H10Br2, CAS is 111-24-0, about The one-pot synthesis of butyl-1H-indol-3-alkylcarboxylic acid derivatives in ionic liquid as potent dual-acting agent for management of BPH. Author is Zeng, Li-Yan; Yang, Fubiao; Chen, Kaixuan; Zeng, Yunong; Jiang, Zhenzhou; Liu, Shuwen; Xi, Baomin.

Based on the SAR of both α1-AR antagonists and 5α-reductase (5AR) inhibitors, the dual-acting agent 4-(1-(4-(4-(2-methoxyphenyl)piperazin-1-yl)butyl)-1H-indol-3-yl)butanoic acid was designed against BPH and synthesized by two steps of N-alkylation. One-pot protocol towards 4-(1-(4-(4-(2-methoxyphenyl)piperazin-1-yl)butyl)-1H-indol-3-yl)butanoic acid was newly developed. With IL [C6min]Br as solvent, the yield of 4-(1-(4-(4-(2-methoxyphenyl)piperazin-1-yl)butyl)-1H-indol-3-yl)butanoic acid was increased to 75.1% from 16.0% and the reaction time was shortened in 1.5 h from 48 h. 25 derivatives structurally based on arylpiperazine and indolyl butyric acid with alkyl linker were prepared The protocol was extended to get another 14 derivatives wherein O-alkylation was involved, and applied to the synthesis of biol. efficient mols. DPQ and Aripiprazole. Expectedly, 4-(1-(4-(4-(2-methoxyphenyl)piperazin-1-yl)butyl)-1H-indol-3-yl)butanoic acid exhibited dual inhibition of α1-AR and 5α-reductase, and exhibited no obvious cytotoxicity against human cells. The pharmacokinetic properties of 4-(1-(4-(4-(2-methoxyphenyl)piperazin-1-yl)butyl)-1H-indol-3-yl)butanoic acid was also determined

From this literature《The one-pot synthesis of butyl-1H-indol-3-alkylcarboxylic acid derivatives in ionic liquid as potent dual-acting agent for management of BPH》,we know some information about this compound(111-24-0)COA of Formula: C5H10Br2, but this is not all information, there are many literatures related to this compound(111-24-0).

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