Fluoride-Catalyzed Arylation of α-(Trifluoromethyl)styrene Derivatives with Silicon-Masked, Functionalized Aryl Pronucleophiles
作者:Aliyaah J. M. Rahman、Yannan Xu、Martin Oestreich
DOI:10.1021/acs.orglett.3c02021
日期:2023.8.4
arylation of α-(trifluoromethyl)styrene derivatives with silicon-protected functionalized aryl pronucleophiles is disclosed. Catalytic amounts of an anionic Lewis base such as fluoride trigger the release of the aryl nucleophile from N-aryl-N′-silyldiazenes by desilylation along with denitrogenation. The thus-generated carbon nucleophiles engage in an allylic displacement with α-(trifluoromethyl)styrene electrophiles
公开了一种操作简单的无过渡金属方案,用于用硅保护的官能化芳基亲核试剂对α-(三氟甲基)苯乙烯衍生物进行芳基化。催化量的阴离子路易斯碱(例如氟化物)通过脱甲硅烷基化和脱氮,触发芳基亲核试剂从N-芳基-N'-甲硅烷基二氮烯中释放。由此产生的碳亲核试剂与α-(三氟甲基)苯乙烯亲电子试剂发生烯丙基置换,得到相应的偕二氟烯烃。