我们在此报告了在碱性条件下使用碳载Pt纳米颗粒(Pt / C)作为非均相催化剂,用甲醇对胺和硝基芳烃进行选择性N-甲基化的过程。该方法广泛适用于四种类型的Ñ -methylation反应:(1)N,N-氮气氛下脂族胺的-dimethylation 2,(2)Ñ -monomethylation下40巴脂族胺为h 2,(3)ñ -monomethylation N 2下的芳香胺的合成;(4)在2 bar H 2下由硝基芳烃和甲醇串联合成N-甲基苯胺。在相同的催化系统下,所有这些反应均显示出适用于多种底物的相应甲胺的收率高,周转率高(TON)和良好的催化剂可重复使用性。机理研究表明,反应是通过借用氢的方法进行的。动力学结果结合密度泛函理论(DFT)计算表明,Pt / C的高性能归因于Pt中等的金属-氢键强度。
An interesting iron‐catalyzed protocol for the synthesis of 2‐aminofurans has been developed. Starting from 2‐haloketones and tertiary amines or enamines, various 2‐aminofurans were produced in good yields.
The present invention relates to novel substituted phenyl compounds of the formula
and to a process for making them. The compounds can be used as intermediates for making 6-substituted-1-(2H)-isoquinolinone derivatives.
[EN] SUBSTITUTED PHENYL COMPOUNDS<br/>[FR] COMPOSÉS DE PHÉNYLE SUBSTITUÉS
申请人:SANOFI SA
公开号:WO2013007502A1
公开(公告)日:2013-01-17
The present invention relates to novel substituted phenyl compounds of the formula (VI) and to a process for making them. The compounds can be used as intermediates for making 6-substituted-1-(2H)-isoquinolinone derivatives.
Nickel catalyzed addition of -NH- containing compounds to vinyl and aryl halides
申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP1178040A1
公开(公告)日:2002-02-06
A process for producing unsaturated nitrogen containing compounds such as enamides, enamines and aryl amines/amides is disclosed. A vinyl halide or aryl halide is reacted with an -NH- containing compound in the presence of a catalytic amount of a catalyst precursor composition comprising zero-valent nickel and an organophosphine ligand. One step coupling of vinyl halides and aryl halides with -NH- containing compounds is made possible by practice of this invention.
Synthesis, characterisation and reactivity of 2-functionalised vinylstannanes
作者:T Lébl、J Holeček、M Dymák、D Steinborn
DOI:10.1016/s0022-328x(00)00887-1
日期:2001.4
2-functionalised vinylstannanes (E)/(Z)-Ph3SnCR′CHYRn with acetic and chloroacetic acid in CDCl3 proceeded by protodestannylation yielding Ph3SnOOCCH2X (X=H, Cl) and CHR′CHYRn. The results of kinetics measurements reveal that Lewis-basic substituents YRn facilitate the electrophilic cleavage of SnC bonds, and this effect increases with the basicity of the heteroatom Y, i.e. in the order S