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Paper | Special issue | Vol 67, No. 1, 2006, pp.337-351
Published online, 23rd August, 2005
DOI: 10.3987/COM-05-S(T)33
Reactions of 2-Triphenylphosphoimino-1-azaazulenes with Aryl Isocyanates and Aryl Isothiocyanates

Kentaro Nagamatsu, Ai Serita, Jun-Hau Zeng, Hiroyuki Fujii, Noritaka Abe,* and Akikazu Kakehi

*Department of Chemistry, Faculty of Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8512, Japan

Abstract

Reaction of 2-triphenylphosphoimino-1-azaazulenes (4a-c), prepared from 2-amino-1-azaazulenes, with some aryl isocyanates gave 2-arylimino-3-aryl-2,3,4,4a-tetrahydro-1,3,4a-triazabenz[a]azulen-4-one (6) as major products. Reaction of aryl isothiocyanates gave 2-arylimino-3-aryl-2,3,4,4a-tetrahydro-1,3,4a-triazabenz[a]azulene-4-thiones (10).