The stereoselective dehydration of 5-(2-hydroxyalkyl)-3(2H)-furanones is accomplished conveniently by the treatment with Me3SiCl in acetonitrile to give 5-[(E)-1-alkenyl]-3(2H)-furanones.
用
乙腈中的 Me3SiCl 处理 5-(2-羟基烷基)-
3(2H)-呋喃酮,可方便地实现其立体选择性脱
水,得到 5-[(E)-1-烯基]-
3(2H)-呋喃酮。