Synthesis of α-Keto Amides by a Pyrrolidine/TEMPO-Mediated Oxidation of α-Keto Amines
作者:Peter Somfai、Lu Yu
DOI:10.1055/s-0035-1562541
日期:——
A mild procedure has been developed for the synthesis of α-keto amides by α-oxidation of the corresponding α-keto amines mediated by pyrrolidine and TEMPO. The method can also be applied to the synthesis of α-keto thioamides and α-keto amidines.
已经开发了一种温和的程序,用于通过吡咯烷和 TEMPO 介导的相应 α-酮胺的 α-氧化来合成 α-酮酰胺。该方法也可用于α-酮硫代酰胺和α-酮脒的合成。
Base-catalysed rearrangements involving ylide intermediates. Part 8. The preparation and some reactions of stable ammonium ylides
作者:Robert W. Jemison、Sivapathasuntharam Mageswaran、W. David Ollis、Ian O. Sutherland、Yodhathai Thebtaranonth
DOI:10.1039/p19810001154
日期:——
the reactions of the ammoniumylides resemble those of the corresponding sulphonium ylides. Thus ylides having a suitable migrating group (ArCH2) undergo a Stevens [1,2] rearrangement on heating, and other ylides fragment to give a tertiary amine and products containing the PhCOCH grouping. A number of ylides reacted with dimethyl acetylenedicarboxylate to give the furans (32). The ylides (14b and c)
Cu(OAc)2 and acids promoted the oxidative cleavage of α-aminocarbonyl compounds with amines: efficient and selective synthesis of 2-t-amino-2-imino-carbonyl and 2-amino-2-oxocarbonyl
method for the synthesis of 2-t-amino-2-imino-carbonyl (C) and 2-amino-2-oxocarbonyl (D) compounds has been discovered through a copper-promoted oxidating amidation reactions between α-amino -carbonyl compounds and amines. Promoted by the crucial copper species, perfect selectivity and good to excellent yields could be achieved. This transformation is achieved through CN bond oxidative cleavage and formation
Thiocyanation of α-amino carbonyl compounds for the synthesis of aromatic thiocyanates
作者:Niannian Yi、Mingjing Ouyang、Huimin Liu、Miao Yan、Xiaoyong Wen、Yi Xiong、Bing Yi
DOI:10.1177/1747519820923553
日期:2021.1
A procedure for K2S2O8-mediated thiocyanation of α-amino carbonylcompounds has been developed for the synthesis of aromatic thiocyanates. A series of α-amino carbonylcompounds have been investiga...