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Note | Special issue | Vol 56, No. 1-2, 2002, pp.497-501
Published online, 1st January, 1970
DOI: 10.3987/COM-01-S(K)26
A Simple and Facile Synthesis of Azuleno[1,2-d]pyrazoles from 1-Acetyl-2-methoxyazulene

Dao-Lin Wang and Kimiaki Imafuku*

*Department of Chemistry, Faculty of Science, Kumamoto University, Kurokami 2-39-1, Kumamoto 860-8555, Japan

Abstract

1-Acetyl-2-methoxyazulene (1) reacted with arylhydrazines (2a-h) under refluxing in ethanol to give 1-aryl-3-methylazuleno[1,2-d]pyrazoles (3a-h) in moderate to high yields, except for the low yield of azuleno[1,2-d]pyrazole (3g).