SYNTHESIS OF PYRIMIDO[4',5'-4,5]THIENO[2,3-C]PYRIDAZINE DERIVATIVES

Authors
QUINTELA JM VEIGA MC ALVAREZSARANDES R PEINADOR C
Citation
Jm. Quintela et al., SYNTHESIS OF PYRIMIDO[4',5'-4,5]THIENO[2,3-C]PYRIDAZINE DERIVATIVES, Monatshefte fuer Chemie, 127(5), 1996, pp. 537-547
Citations number
23
Categorie Soggetti
Chemistry
Journal title
Monatshefte fuer Chemie → ACNP
ISSN journal
00269247
Volume
127
Issue
5
Year of publication
1996
Pages
537 - 547
Database
ISI
SICI code
0026-9247(1996)127:5<537:SOPD>2.0.ZU;2-P
Abstract
Convenient syntheses of trahydropyrimido[4',5:4,5]thieno[2,3-c]pyridaz ines (4a-g), 4-diphenyl-8-oxo-6-substituted-7,8-dihydropyrimido [4',5' :4,5]thieno [2,3-c]pyridazines (5a-g), oro-3,4-diphenyl-6-substituted- pyrimido[4',5':4,5] thieno [2,3-c]pyridazines (6a-g), and ituted-pyrim ido[4',5',4,5]thieno[2,3-c]pyridazines (7a-f) from 4-cyano-5,6-dipheny lpyridazine-3(2H)-thione (1) via 5-amino-3,4-diphenylthieno [2,3-c] py ridazine-6-carboxamide (3) are reported.