t-Butyl bromide–dimethyl sulphoxide reactions. Pummerer-like reaction with carboxylic acids and N-protected amino-acids
作者:Arnaldo Dossena、Rosangela Marchelli、Giuseppe Casnati
DOI:10.1039/p19810002737
日期:——
t-Butyl bromide-activated dimethyl sulphoxide reacted with carboxylic acids and differently N-protected aminoacids in the presence of a base (NaHCO3 or Et3N). High to quantitative yields of methylthiomethyl (MTM) esters were obtained in all cases without interference by other functional groups or racemization. The mechanism of the reaction is discussed on the basis of the products formed, of spectral
在碱(NaHCO 3或Et 3 N)存在下,叔丁基溴活化的二甲亚砜与羧酸和不同的N-保护的氨基酸反应。在所有情况下,都能获得高定量的甲硫基甲基(MTM)酯收率,而不会受到其他官能团或消旋作用的干扰。根据形成的产物,光谱数据和其他各种实验讨论了反应机理。