Reductive Allylic Defluorinative Cross-Coupling Enabled by Ni/Ti Cooperative Catalysis
作者:Zhiyang Lin、Yun Lan、Chuan Wang
DOI:10.1021/acs.orglett.9b03102
日期:2019.10.18
synthesis, but they have been rarely engaged in cross-electrophile coupling. Herein, we report a Ni/Ti-cocatalyzed reductive allylic defluorinative cross-coupling between trifluoromethyl alkenes and unactivated alkyl chlorides and bromides, enabling the efficient preparation of diverse functional-group-rich gem-difluoroalkenes. Notably, synthesis of the gem-difluoroalkene analogues of azaperone, haloperidol
未活化的烷基氯是有机合成中的重要组成部分,但很少参与交叉亲电子偶联。在本文中,我们报道了三氟甲基烯烃与未活化的烷基氯化物和溴化物之间的Ni / Ti催化的还原性烯丙基脱氟交叉偶联,从而能够有效地制备各种富含官能团的宝石-二氟烯烃。值得注意的是,使用我们的方法作为关键步骤,也完成了氮杂哌酮,氟哌啶醇和苯哌啶醇的宝石-二氟烯烃类似物的合成。