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Cyclization Reaction of 2-Azido-1-(2-hydroxyphenyl)ethanones with Terminal Alkynoates Catalyzed by 4-Dimethylaminopyridine (DMAP): Synthesis of 2-Aminobenzofuran-3(2H)-one Derivatives

✍ Scribed by Ling-Guo Meng; Ni-Lin Ge; Ming-Ming Yang; Lei Wang

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 446 KB
Volume: 2011
Category: Article
ISSN: 1434-193X
DOI: 10.1002/ejoc.201100250

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✦ Synopsis

Abstract

An unexpected cyclization reaction of 2‐azido‐1‐(2‐hydroxyphenyl)ethanones with terminal alkynoates catalyzed by 4‐dimethylaminopyridine (DMAP) was developed, and 2‐aminobenzofuran‐3(2__H__)‐one derivatives were obtained in moderate to good yields under mild reaction conditions within 2 h. The scope and limitations of the cyclization reactions were also investigated.

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