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Report | Regular issue | Vol 19, No. 9, 1982, pp.1623-1626
Published online, 1st January, 1970
DOI: 10.3987/R-1982-09-1623
Addition Reactions of Condensed Azole Derivatives with Dimethyl Acetylenedicarboxylate III

Norio Kawahara, Takako Nakajima, Tsuneo Ito, and Haruo Ogura

*Hokkaido College of Pharmacy, 7-1 Katsuraoka-cho, Otaru 047-02, Japan

Abstract

Benzimidazole derivatives (1) reacted with dimethyl acetylenedicarboxylate (DMAD) in alcoholic solvents at room temperature to afford three kinds of addition products; tricyclic compounds (3 and 6), hydration product (4) and solvent adduct (2).