Vilsmeier-Haack Reaction of α-Oxo Ketene Dithioacetals to α-Chlorovinyl/Ethynyl Ketene Dithioacetals
作者:Dewen Dong、Qun Liu、Yingchun Liu、Yulong Zhao、Yimei Qi、Zhuo Wang
DOI:10.1055/s-2004-834901
日期:——
A range of α-oxo ketene dithioacetals 1 reacted with Vilsmeier reagent (POCl3/DMF) to afford α-chlorovinyl ketene dithioacetals 2. With the treatment of NaOH in ethanol or methanol, the compounds 2 were transformed into the corresponding α-ethynyl ketene dithioacetals 3 in moderate to high yields.