Various cyclopropenes and fluorinated cyclopropanes were prepared from readily available alkyl triflones and electron-deficient alkenes via a Michael addition initiated ring closure (MIRC) process. This protocol not only has a broad substrates scope but also achieves good chemical yields and moderate diastereoselectivity. The mechanism may involve tandem Michael addition of triflones/intramolecular
各种环
丙烯和
氟化
环丙烷通过迈克尔加成引发的闭环 (MIRC) 工艺由容易获得的烷基三
氟甲砜和缺电子烯烃制备。该协议不仅具有广泛的底物范围,而且还实现了良好的
化学收率和适度的非对映选择性。该机制可能涉及串联迈克尔加成
三氟乙烯/分子内亲核环化(消除-SO 2 CF 3)/消除
氟化物。