Bis(trifluoromethyl)cadmium·glyme (glyme = dimethoxyethane), a new, powerful fluoroalkylating agent and low-temperature source of difluorocarbene
作者:Larry J. Krause、John A. Morrison
DOI:10.1039/c39800000671
日期:——
The newly isolated reagent (CF3)2Cd·glyme [glyme =(MeOCH2)2] readily exchanges ligands with, e.g., GeI4, SnI4, or PI3 to form the fully substituted compounds (CF3)4Ge, (CF3)4Sn, or (CF3)3P, within minutes at ambient temperature; reactions with acyl halides, like MeC(O)Br, form the acyl fluorides, like MeC(O)F, in excellent yields, 95%, at –25 °C and extrusion of CF2 at –25 °C in this reaction in indicated
新分离的试剂(CF 3)2镉·甘醇二甲醚[甘醇二甲醚=(MeOCH 2)2 ]容易与,交换配体例如,GEI 4,SNI 4,或PI 3,以形成完全取代的化合物(CF 3)4的Ge, (CF 3)4 Sn或(CF 3)3 P在环境温度下在数分钟内;与酰基卤(如MeC(O)Br)反应形成酰氟(如MeC(O)F),在–25°C下以极好的收率(95%)和CF 2挤出 该反应在–25°C下进行反应,表明由四甲基乙烯形成了预期的二氟环丙烷,收率为53%。