Privilege-Structure-Oriented Three-ComPonent Asymmetric Aminomethylation: Assembly of Chiral 3-Aminomethyl Indolones

被引:24
|
作者
Kang, Zhenghui [1 ]
Zhang, Dan [1 ]
Xu, Xinfang [1 ]
Hu, Wenhao [1 ]
机构
[1] Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangdong Prov Key Lab Chiral Mol & Drug Discover, Guangzhou 510006, Guangdong, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
ENANTIOSELECTIVE TOTAL-SYNTHESIS; C-H FUNCTIONALIZATION; BRONSTED ACID; COOPERATIVE CATALYSIS; DIAZO-COMPOUNDS; CONSTRUCTION; CARBENE; YLIDES; EPIDITHIODIOXOPIPERAZINES; SPIROINDOLONES;
D O I
10.1021/acs.orglett.9b03787
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The asymmetric aminomethylation reaction of 3-diazooxindoles with electronic-rich arenes and N,0-acetals cooperatively catalyzed by achiral dirhodium complex and chiral phosphoric acid is reported. The reaction provides a novel method for the facile synthesis of chiral 3-aminomethyl oxindoles with an all -carbon quaternary center in good yields (82-98%) with high to excellent enantioselectivities (up to 97% ee). The transformation proceeds through a convergent addition of a reactive zwitterionic intermediate with a chiral methylene iminium generated in situ via asymmetric counteranion -directed catalysis (ACDC). This work represents the first asymmetric aminomethylation method of mixed 3,3'-bisindoles with structural diversity.
引用
收藏
页码:9878 / 9883
页数:6
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