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ChemInform Abstract: Control of 6-exo and 7-endo Cyclizations of Alkynylamides Using Platinum and Bismuth Catalysts.

✍ Scribed by Anne-Lise Girard; Taro Enomoto; Shinsuke Yokouchi; Chihiro Tsukano; Yoshiji Takemoto

Publisher
John Wiley and Sons
Year
2011
Weight
44 KB
Volume
42
Category
Article
ISSN
0931-7597

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✦ Synopsis

Abstract

In the presence of Bi(O‐Tf)~3~ alkynylamides of type (I) are found to undergo 6‐exo cyclization to afford piperazinones like (II).

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