Synthesis of α-aminonitriles by self-catalyzed, stoichiometric reaction of primary amines, aldehydes, and trimethylsily cyanide
作者:Jean-Pierre Leblanc、Harry W. Gibson
DOI:10.1016/s0040-4039(00)60956-5
日期:1992.10
yield by either the addition of a primary amine to a mixture aldehyde/trimethylsilylcyanide (TMSCN) or by the addition of an aldehyde to a mixture amine/TMSCN. The reaction proceeds via the initial condensation of a minute amount of aldehyde and amine groups to generate azomethine bonds and water. The latter then acts catalytically to rapidly convert the aldehyde into the trimethylsilyl cyanohydrin, which
In(III) and Sc(III) based coordination polymers derived from rigid benzimidazole-5,6-dicarboxylic acid: Synthesis, crystal structure and catalytic property
作者:Juan Chai、Pengcheng Wang、Jia Jia、Bing Ma、Jing Sun、Yufang Tao、Ping Zhang、Li Wang、Yong Fan
DOI:10.1016/j.poly.2017.10.028
日期:2018.2
Two new coordination polymers (CPs), [InCl(H(2)bidc)(2)(H2O)](n) (1) and [Sc(Hbidc)(OH)(H2O)](n) (2) (H(3)bidc = benzimidazole-5,6-dicarboxylic acid) were synthesized through a solvothermal approach. 1 exhibits a 1D infinite chain, which further constructs a 3D supramolecular framework via hydrogen bonds. 2 features a 3D supramolecular framework consisting of left- and right-handed chiral layers, which contain the left- and right-handed chiral spiral chains. The adjacent layers stack through pi-pi stacking interactions between benzene and imidazole rings. 1 exhibits excellent catalytic reactivity for the Strecker reaction and can be recycled four consecutive reactions with more than 95% conversion yields. (C) 2017 Elsevier Ltd. All rights reserved.
Synthesis of the β<sub>3</sub>-Adrenergic Receptor Agonist Solabegron and Analogous <i>N</i>-(2-Ethylamino)-β-amino Alcohols from <i>O</i>-Acylated Cyanohydrins – Expanding the Scope of Minor Enantiomer Recycling
A novel methodology to produce highly enantioenriched N-(2-ethylamino)-beta-amino alcohols was developed. These compounds were obtained from O-(alpha-bromoacyl) cyanohydrins, which were synthesized by the minor enantiomer methodology employing a Lewis acid and a biocatalyst, followed by nucleophilic substitution with amines and reduction. The importance of the developed methodology was demonstrated by completing a highly enantioselective total synthesis of the beta(3)-adrenergic receptor agonist Solabegron.
US5169973A
申请人:——
公开号:US5169973A
公开(公告)日:1992-12-08
Cd-MOF@PVDF Mixed-Matrix Membrane with Good Catalytic Activity and Recyclability for the Production of Benzimidazole and Amino Acid Derivatives
作者:Yansong Jiang、Jing Sun、Xiaona Yang、Jieyu Shen、Yu Fu、Yong Fan、Jianing Xu、Li Wang
DOI:10.1021/acs.inorgchem.1c00084
日期:2021.2.1
Mixed-matrix membranes (MMMs) incorporating metal–organic framework crystalline fillers as heterogeneous catalysts for organic transformation reactions have attracted more attention in catalysis science. Herein, a new 3D cadmium metal–organic framework (H3O)·[Cd(dppa)] (1) was first synthesized using the rigid 4-(3,5-dicarboxylphenyl)picolinic acid (H3dppa) as an organic ligand under solvothermal conditions