Metal-Free Syntheses of α-Ketothioamide and α-Ketoamide Derivatives from Sulfoxonium Ylides
作者:Trayambek Nath Chaubey、Paran J. Borpatra、Ajay Sharma、Satyendra Kumar Pandey
DOI:10.1021/acs.orglett.2c03371
日期:2022.11.4
An efficient base, additive and metal-free synthetic methods for α-ketothioamide and α-ketoamide derivativesfrom readily available sulfoxonium ylides have been described. Sulfoxonium ylides with primary or secondary amines afforded α-ketothioamides in the presence of elemental sulfur, whereas α-ketoamides were produced when I2 and TBHP were present. The reaction proceeded well at room temperature
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。