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■ A Novel Route to 1-Azaazulenes by the Reaction of β-Amino Enones with Activated Tropones

Makoto Nitta,* Satoshi Mori, and Yukio Iino

*Department of Chemistry, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan

Abstract

The reactions of β-amino enones with activated tropones (2-bromo-, 2-chloro-, and 2-tosyloxytropones) underwent an enamine alkylation followed by dehydrating condensation to give 1-azaazulene derivatives in modest yields.