The preparation of 3-phenyl [1, 2, 4] triazolo [4, 3-a] pyridines and their benzologs from N-(phenylsulfonyl) benzohydrazonoyl chloride and pyridines.

S Ito, A Kakehi, T Matsuno, J Yoshida

文献索引：Ito, Suketaka; Kakehi, Akikazu; Matsuno, Toshiyuki; Yoshida, Jun-ichi Bulletin of the Chemical Society of Japan, 1980 , vol. 53, # 7 p. 2007 - 2011

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被引用次数: 10

摘要

3-Phenyl [1, 2, 4] triazolo [4, 3-a] pyridines were obtained in good yields from N′-[α-(1- pyridinio) benzylidene] benzenesulfonohydrazidates, generated from 2-unsubstituted pyridines and N-(phenylsulfonyl) benzohydrazonoyl chloride (2), by oxidation with chloranil. The reaction of quinoline and isoquinoline with 2 gave 1-phenyl-3-phenylsulfonyl-3, 3a- dihydro [1, 2, 4] triazolo [4, 3-a] quinoline and 3-phenyl-1-phenylsulfonyl-1, 10b-dihydro [1, ...