BiX3 and FeX3-Promoted Prins Cyclization of Enol Ethers in CH2Cl2

The Prins cyclization of enol ethers has been realized by employing BiX3 （or FeX3） as catalyst and TMSX （X = Br, C1） as the halogen source. The presence of a tiny amount of water in the solvent dichloromethane played a key role for the reaction to proceed. The reaction is believed to be catalyzed by...

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Bibliographic Details
Published in:Chinese journal of chemistry 2012-07, Vol.30 (7), p.1439-1444
Main Author: 杨艺 贾平敬 刘素平 于炜
Format: Article
Language:English
Subjects:
Brønsted acids
enol ethers
homogeneous catalysis
Lewis acids
Prins cyclization
二氯甲烷
催化剂
原位生成
反应
溶剂
环烯
路易斯酸
醇醚
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Summary:The Prins cyclization of enol ethers has been realized by employing BiX3 （or FeX3） as catalyst and TMSX （X = Br, C1） as the halogen source. The presence of a tiny amount of water in the solvent dichloromethane played a key role for the reaction to proceed. The reaction is believed to be catalyzed by Lewis acid-assisted Bronsted acids, which were generated in situ from MX3 and water in the solvent.
ISSN:1001-604X
1614-7065
DOI:10.1002/cjoc.201100659