Synthesis of new pyridazino[4?,3?:4,5]-thieno[3,2-d]-1,2,3-triazine and pyrimido[4?,5?:4,5]thieno[2,3-c]pyridazine derivatives
作者:J. M. Quintela、M. C. Veiga、R. Alvarez-Sarand�s、L. Gonz�lez、C. Peinador
DOI:10.1007/bf00807576
日期:1996.10
8,9-Diphenylpyridazino[4',3':4,5]thieno[3,2-d]-1,2,3-triazin-4(3H)-one (2), 3-substituted 8,9-diphenylpyridazino[4',3':4,5]thieno[3,2-d]-1,2,3-triazin-4(3H)-ones (3a-c), 3,4-diphenylpyrimido-[4',5':4,5]thieno[2,3-c]pyridazin-8(7H) (4), 8-chloro-3,4-diphenylpyrimido[4',5':4,5]thieno[2,3-c] pyridazine (5), 8-substituted 3,4-diphenylpyrimido[4':5':4,5]thieno[2,3-c]pyridazines (6a-h) and 7-substituted 3,4-diphenylpyrimido [4',5':4,5]thieno[2,3-c]pyridazin-8(7H)-ones (7a-c) were synthesized from 5-amino-3,4-diphenylthieno[2,3-c]pyridazine-6-carboxamide (1).