Tuning the Reactivity of Difluoromethyl Sulfoximines from Electrophilic to Nucleophilic: Stereoselective Nucleophilic Difluoromethylation of Aryl Ketones
作者:Xiao Shen、Wei Zhang、Chuanfa Ni、Yucheng Gu、Jinbo Hu
DOI:10.1021/ja308419a
日期:2012.10.17
A stereoselective synthesis of enantiomerically enriched difluoromethyl tertiary alcohols by tuning the reactivity of difluoromethyl sulfoximines from electrophilic to nucleophilic difluoromethylating agents is reported. The key feature of this chemistry is the diastereoselective addition of the difluoromethyl sulfoximine to the prochiral carbon of the ketone. The present method was used to prepare
报道了通过调节二氟甲基亚砜亚胺的反应性从亲电子到亲核二氟甲基化试剂的立体选择性合成对映体富集的二氟甲基叔醇。这种化学的关键特征是二氟甲基亚砜亚胺与酮的前手性碳的非对映选择性加成。本方法用于制备对映体富集的二氟甲基仲醇和天然产物 gossonorol 和 boivinian B 的二氟化类似物,证明了该方法的效力。