Monatshefte fur Chemie p. 739 - 746 (1996)
Update date:2022-08-05
Topics:
Quintela, J. M.
Veiga, M. C.
Conde, S.
Peinador, C.
A facile synthesis of 8-substituted pyrimido<4',5':4,5>thieno<2,3-c>pyridazines (6a-i) has been accomplished.The sequence involves the ring closure of a heterocyclic aminonitrile precursor (3) after reaction with (dichlomethylene)-dimethylammonium chloride. - Keywords: Pyrimido<4',5':4,5>thieno<2,3-c>pyridazine derivatives; Thieno<2,3-c>pyridazine-6-carbonitrile; N,N-Dimethyldichloromethyleniminium chloride; Enaminonitrile
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