A range of alkenes have been converted in a single step into the corresponding trifluoromethyl-substituted cyclopropanes by treatment with 2-diazo-l,l,l-trifluoroethane over metal catalysts. Application of the Gaspar-Roth procedure allowed the preparation of target compounds on a multi-gram scale. The practical utility of this reaction has been demonstrated by the synthesis of both diastereoisomers
通过在
金属催化剂上用 2-重氮-1,1,1-
三氟乙烷处理,一系列烯烃在一个步骤中转化为相应的三
氟甲基取代的
环丙烷。Gaspar-Roth 程序的应用允许以多克规模制备目标化合物。通过分两步合成非天然
氨基酸三
氟去甲冠酸的两种非对映异构体已经证明了该反应的实用性。