A tandem synthetic route to a diverse array of cyclic compounds has been developed from Friedel–Crafts acylation of alkynes followed by the microwave irradiation of β-chlorovinyl ketone intermediates. The stereoisomeric β-chlorovinyl ketone intermediates smoothly underwent a thermal α-vinyl enolization and ring expansion to vinyl and carbocyclic furans as well as cyclopetene derivatives in good to
从
炔烃的Friedel-Crafts酰化反应,然后用微波辐照β-
氯乙烯基酮中间体,已开发出一种串联合成途径,以合成多种环状化合物。立体异构体β-
氯乙烯基酮中间体平稳地经历了热α-
乙烯基烯键化反应,并扩环成
乙烯基和碳环
呋喃以及
环戊烯衍
生物,收率好至极好,而无需任何催化剂。