Cu-Promoted difluorocarbene-derived trifluoromethylselenolation of benzylhalides with the Ph3P+CF2CO2−/Se/F− system is described. Three new carbon–heteroatom bonds, a Se–CF2 bond, SeCF2–F bond, and C–SeCF3 bond, were sequentially formed in the reaction. This work represents the first trifluoromethylselenolation protocol involving an external fluoride for the generation of the key intermediate, CF3Se−
铜促进的苄基卤的二氟卡宾衍生trifluoromethylselenolation随pH 3 P + CF 2 CO 2 - / S ë / F -系统进行说明。在反应中依次形成了三个新的碳-杂原子键:Se-CF 2键,SeCF 2 -F键和C-SeCF 3键。这项工作是涉及为关键中间体,CF的产生的外部氟化物第一trifluoromethylselenolation协议3硒-阴离子。