Enzymatic Primary Amination of Benzylic and Allylic C(sp<sup>3</sup>)–H Bonds
作者:Zhi-Jun Jia、Shilong Gao、Frances H. Arnold
DOI:10.1021/jacs.0c03428
日期:2020.6.10
processes are reported for their synthesis, methods that directly install a primary amine group into C(sp3)-H bonds remain unprecedented. Here, we report a set of new-to-nature enzymes that catalyzes the direct primary amination of C(sp3)-H bonds with excellent chemo-, regio-, and enantioselectivity, using a readily available hydroxylamine derivative as the nitrogen source. Directed evolution of genetically-encoded
Enantioselective Rhodium-Catalyzed Alkenylation of Aliphatic Imines
作者:Xue-Wei Qian、Ze-Jian Xue、Qian Zhao、Zhe Cui、Ya-Jing Chen、Chen-Guo Feng、Guo-Qiang Lin
DOI:10.1021/acs.orglett.7b02737
日期:2017.10.20
An efficient, enantioselective rhodium-catalyzed addition of potassium alkenyltrifluoroborates to N-nosyl aliphatic imines has been realized. Good reaction yields and excellent enantioselectivities (94–99% ee) were obtained for a variety of aliphatic imines and nucleophilic alkenyltrifluoroborates. An active rhodium-diene catalyst and the precise reaction condition control proved to be pivotal for