Formal [4+1] cycloaddition of camphor-derived sulfonium salts with aldimines: enantioselective synthesis of 2,3-dihydrobenzofurans

Formal [4+1] cycloaddition of camphor-derived sulfonium salts with aldimines: enantioselective synthesis of 2,3-dihydrobenzofurans
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樟脑衍生锍盐与醛亚胺的形式[4 1]环加成:2,3-二氢苯并呋喃的对映选择性合成

DOI:
10.1016/j.tet.2013.03.059
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发表时间:
2013-05-13
期刊:
影响因子:
2.1
通讯作者:
Xiao, Wen-Jing
Xiao, Wen-Jing
中科院分区:
化学3区
文献类型:
--
作者:
Cheng, Ying;Hu, Xiao-Qiang;Xiao, Wen-Jing

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已经描述了樟脑衍生的锍盐与醛亚胺的不对称形式[41+1]环加成。该反应可以在温和的反应条件下以中等至良好的收率有效合成反式-2,3-二取代-2,3-二氢苯并呋喃,dr > 95:5,ee 高达 98%。 (C) 2013 Elsevier Ltd. 保留所有权利。
An asymmetric formal [41+1] cycloaddition of camphor-derived sulfonium salts with aldimines has been described. The reaction allows for the efficient synthesis of trans-2,3-disubstituted-2,3-dihydrobenzofurans in moderate to good yields with >95:5 dr and up to 98% ee under mild reaction conditions. (C) 2013 Elsevier Ltd. All rights reserved.