Chemistry of Heterocyclic Compounds p. 921 - 923 (1984)
Update date:2022-08-05
Topics:
Mikitenko, E.K.
Romanov, N.N.
Condensation of 4-amino-2-methylthiothiazolium salts with 2,4,6-trichloro-5-formylpyrimidine or 3-R-2,4-dioxo-6-chloro-5-formyl-1,2,3,4-tetrahydropyrimidines yielded mesoionic derivatives of a new heterocyclic system - thiazolo<3,4-a>pyrimido<5,4-e>pyrimi
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