- 作者: M. A. Abdel-Rahman, A. Khodairy*, A.-B. A. G. Ghattas, S. Younes
- 作者服務機構: Chemistry Department, Faculty of Science, Sohag 82524 , Egypt
- 中文摘要: 4-Bromo-1-phenyl-3,5-pyrazolidinedione 2 reacted with different nucleophilic reagents to give the corresponding 4-substituted derivatives 3-8. The cyclized compounds 9-11 were achieved on refluxing compounds 3, 4 or 6a in glacial acetic acid or diphenyl ether. 4,4-Dibromo-1-phenyl-3,5-pyrazolidinedione 12 reacted with the proper bidentates to give the corresponding spiro 3,5-pyrazolidinediones 13-15, respectively. The 4-aralkylidine derivatives 16a-c, were subjected to Mannich reaction to give Mannich bases 17a-c-22a-c, respectively. 4-(p-Methylphenylaminomethylidine)-1-phenyl-3,5-pyrazolidinedione 23 or 4-(p-methylphenylazo)-1-phenyl-3,5-pyrazolidinedione 29 were prepared and reacted with active nitriles, cyclic ketones and N,S-acetals to give pyrano[2,3-c]pyrazole, pyrazolo[4',3':5,6]pyrano[2,3-c]pyrazole, spiropyrazole-4,3'-pyrazole and spiropyrazole-4,3'-[1,2,4]triazolane derivatives 24-34, respectively.
- 英文摘要: --
- 中文關鍵字: 3,5-Pyrazolidinedione; Pyrazolo[3,4-b][1,4]thiazine; Imidazo[4,5-c]pyrazole and spiro pyrazole-4',2-thiadiazole derivatives.
- 英文關鍵字: --