作者:Guofei Chen、Chunling Fu、Shengming Ma
DOI:10.1016/j.tet.2006.02.053
日期:2006.5
butenolides were prepared from 2,3-allenoates and PhSeCl in the presence of water. The yields of the products depend largely on the structures of 2,3-allenoates. The addition of water is crucial for some of this electrophilic cyclization. The reaction of simple unsubstituted methyl 2,3-butadienoate afforded methyl 4-chloro-3-phenylselanylbut-2(Z)-enoate in good yield and stereoselectivity.
在水的存在下,由2,3-脲基甲酸酯和PhSeCl制备β-Organoselenium取代的丁烯化物。产品的产率主要取决于2,3-烯丙基酯的结构。加水对于某些亲电环化至关重要。简单的未取代的2,3-丁二烯酸甲酯的反应以良好的收率和立体选择性提供了4-氯-3-苯基硒基丁酸2-(Z)-烯酸甲酯。