Addition reaction of zinc acetylides to thioiminium salts leading to 3-amino-1-sulfenyl-1,4-enynes
作者:Toshiaki Murai、Yukiyasu Ohta、Yuichiro Mutoh
DOI:10.1016/j.tetlet.2005.03.166
日期:2005.5
The reaction of thioiminium salts with zinc acetylides took place at 60 °C to give 3-amino-1-sulfenyl-1,4-enynes in moderate to good yields. Two molecules of acetylides were incorporated into the products. Nucleophilic attack of zinc acetylides to thioiminium salts may initially occur to form alkynyl S,N-acetals, followed by their [1,3]-rearrangement to give 3-sulfenyl-1-aminoallenes.
硫亚亚胺盐与乙炔锌的反应在60°C进行,以中等至良好的收率得到3-氨基-1-亚磺酰基-1,4-烯炔。将两个乙炔分子掺入产物中。乙炔锌对硫亚胺盐的亲核攻击可能首先发生,形成炔基S,N-乙缩醛,然后进行[1,3]重排,生成3-亚磺基-1-氨基丙烯。