The addition of heteroaryllithium to various ketones followed by dehydration gave 1-(2-heteroaryl)cycloalkenes and (2-hetero- aryl)alkenes. When alkenes were treated with 10 mol% NIS, calix[4]thiophenes and calix[4]furans were obtained in good yields.
将杂芳基
锂加成到各种酮上,随后进行脱
水反应,得到1-(2-杂芳基)环烯和(2-杂芳基)烯。当烯烃用10摩尔%的NIS处理时,可以以良好的产率得到环
吡喃
硫醚[4]和环
吡喃
呋喃[4]。