- 作者: Wen-Fa Kuo, I-Tzu Lin, Shiaw-Wen Sun and Mou-Yung Yeh
- 中文摘要:
Department of Chemistry, National Cheng Kung University, Tainan, Taiwan 70101, R.O.C.
A-Chloroformylarylhydrazones 1 and a-chloroformylarylhydrazones of sydnonecarbaldehydes 3 have been prepared by a new synthetic route: a-chloroformylarylhydrazines hydrochlorides 2 reacted with corresponding carbonyl compounds. Reactions of compounds 3 with various hydrazines to give 6-sydnonyl-1,2,4,5-tetrazinan-3-ones 7 and/or carbazones 8 were also investigated. By oxidization with lead dioxide, compounds 7 were transformed to stable 6-sydnonyl-3,4-dihydro-3-oxo-1,2,4,5-tetrazin-1(2H)-yl radical derivatives 9 (sydnonyl verdazyls). Furthermore, sydnonecarbaldehydes arylhydrazones 5 through acidic conditions could be transferred to 4-arylamino-1,2,3-triazoles 6 which were also obtained by means of acidic decompositions of 4-formylsydnones 10. - 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --