Chemistry of Heterocyclic Compounds p. 191 - 200 (1990)
Update date:2022-08-05
Topics:
Shorshnev, S. V.
Esipov, S. E.
Chernyshev, A. I.
Pozharskii, A. F.
Kuz'menko, V. V.
Gulevskaya, A. V.
It as shown that pyrimido<4,5-e>-1,2,4-triazine-6,8-diones enter the reversed azadiene synthesis reaction with ketones and vinyl ethyl ether in the presence of diethylamine or boron trifluoride etherate, and also with enamines.As a result of the reaction, pyrido<2,3-d>pyrimidine-2,4-diones are formed in good yield.Pyrimido<5,4-e>-1,2,4-triazine-5,7-diones do not undergo such reactions with acetone.The reasons for the unique behavior of the isomeric pyrimidotriazinediones in the reaction with acetone are discussed.
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