Thia-Michael Addition Reactions Using 2-[Bis(alkylthio)methylene]-3-oxo-<i>N</i>-<i>o</i>-tolylbutanamides as Odorless and Efficient Thiol Equivalents
作者:Dewen Dong、Qun Liu、Haifeng Yu、Yan Ouyang、Xihe Bi、Yumei Lu
DOI:10.1055/s-2005-923602
日期:——
A series of 2-[bis(alkylthio)methylene]-3-oxo-N-o-tolylbutanamides 1 have been investigated as nonthiolic and odorlessthiolequivalents in thia-Michael addition reactions. The cleavage of compounds 1 is initiated by NaOHin EtOH; the in situ generated thiolate anions undergo facile conjugate addition to α,β-unsaturated carbonyl compounds 2 affording the corresponding β-keto sulfides 3 in very high