Nickel-Catalyzed Regio- and Enantioselective Hydroamination of Unactivated Alkenes Using Carbonyl Directing Groups
作者:Changseok Lee、Hyung-Joon Kang、Huiyeong Seo、Sungwoo Hong
DOI:10.1021/jacs.2c02343
日期:2022.5.25
addition of an N–H bond to various alkenes via a direct catalytic method is a powerful way of synthesizing value-added chiral amines. Therefore, the enantio- and regioselective hydroamination of unactivatedalkenes remains an appealing goal. Here, we report the highly enantio- and regioselective Ni-catalyzed hydroamination of readily available unactivatedalkenes bearing weakly coordinating native
Transition‐Metal Free Electrophilic Aminations of Polyfunctional<i>O</i>‐2,4,6‐Trimethylbenzoyl Hydroxylamines with Zinc and Magnesium Organometallics
作者:Alisa S. Sunagatullina、Andreas Hess、Alexander Kremsmair、Yifan Li、Yi‐Hung Chen、Paul Knochel
DOI:10.1002/anie.202304445
日期:2023.7.24
Various zinc and magnesium reagents were successfully aminated using O-2,4,6-trimethylbenzoyl hydroxylamines (O-TBHAs) leading to the corresponding tertiary alkyl amines in 52–99 % yield without any additional transition-metal catalyst. This reaction was extended to the preparation of optically enriched amines (up to 88 % ee) starting from enantioenriched secondary alkylmagnesium reagents of the type