v.Braun; Beschke, Chemische Berichte, 1906, vol. 39, p. 4374
作者:v.Braun、Beschke
DOI:——
日期:——
US4507670A
申请人:——
公开号:US4507670A
公开(公告)日:1985-03-26
Metal-free access of bulky N,N′-diarylcarbodiimides and their reduction: bulky N,N′-diarylformamidines
作者:Thota Peddarao、Ashim Baishya、Milan Kr. Barman、Ajay Kumar、Sharanappa Nembenna
DOI:10.1039/c6nj00907g
日期:——
N′-diarylcarbodiimide has been reported using toxic metal oxide (HgO) and magnesium sulphate (MgSO4) under harsh reactionconditions. Furthermore, easy access to 1,3-disubstituted symmetric and unsymmetrical N,N′-diaryl formamidines involving the reaction of symmetrical and unsymmetrical N,N′-diaryl carbodiimides with sodium borohydride is described. The widely used method for the preparation of bulky N,N′-diaryl
Rapid and highly efficient synthesis of thioureas in biocompatible basic choline hydroxide
作者:Najmedin Azizi、Elham Farhadi
DOI:10.1080/17415993.2017.1327591
日期:2017.9.3
ABSTRACT A straightforward and convenient synthesis of symmetrical thiourea derivatives by the reaction of primary amines and carbon disulfide in biocompatible basic choline hydroxide is presented. A variety of biologically important thiourea derivatives can be obtained in good to excellent yields without a tedious work-up under mild reaction conditions. A series of primary aliphatic and aromatic amines