Enantioselective Syntheses of 4H-3,1-Benzoxazines via Catalytic Asymmetric Chlorocyclization of o-Vinylanilides
Enantioselective Syntheses of 4H-3,1-Benzoxazines via Catalytic Asymmetric Chlorocyclization of o-Vinylanilides
复制标题
通过邻乙烯基苯胺催化不对称氯环化对映选择性合成 4H-3,1-苯并恶嗪
DOI:
10.1021/acs.joc.9b02395
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Jun Deng
中科院分区:
文献类型:
--
作者:
Qinxia Xie;Hai-Jiao Long;Qiong-Yin Zhang;Pei Tang;Jun Deng
The catalytic asymmetric halocyclization of alkene is a powerful and straightforward strategy for the synthesis of chiral heterocyclic compounds. Herein, an effective approach to chiral benzoxazine derivatives through organocatalyzed chlorocyclization ofo-vinylanilides was reported. This method provides facile access to a series of chiral benzoxazines in good to excellent yields (up to 99% yield) and with high-level enantiocontrol (up to 92% ee).