A novel approach for the direct conversion of alkylsulfonyl derivatives into alkylcarbonyl derivatives via tin-free radical carbonylation
作者:Sangmo Kim、Kyoung-Chan Lim、Sunggak Kim
DOI:10.1039/b710939c
日期:——
A novel radical approach for the directconversion of RSO(2)X into RCOX in a single step is devised; the present approach is very simple, highly efficient, and minimizes formation of by-product.
N′-diphenylthiourea, triethylamine, and primary alkyl halides is described. Microwave-assisted heating and a catalytic amount of 4-(dimethylamino)pyridine (DMAP) further improved the yields. Both aromatic and aliphatic carboxylic acids were converted to the corresponding thioesters, and many functionalgroups were compatible with this reaction. Several possible reaction intermediates were investigated, and the