59797-09-0Relevant academic research and scientific papers
On the reactions of 6-phosphoranylideneaminouracils and related 6-aminouracils with 2,4,6-cyclooctatrienone: Reactions of the intermediates of uracil-annulated 8-azabicyclo[5.3.1]Undecatetraene ring systems
Nitta, Makoto,Kanda, Hiromi
, p. 491 - 499 (2007/10/03)
The reaction of 1,3-dimethyl-6-phosphoranylideneaminouracil (4) with 2,4,6-cyclooctatrienone (7) in AcOH gives an intermediacy of uracil-annulated 8-azabicyclo[5.3.1]undeca-2,4,7,9-tetraene (9), which results in the formation of 9-acetoxy-5a, 10-methano-2
SYNTHESIS OF PYRIDOPYRIMIDINE-2,4-DIONES FROM PYRIMIDO-1,2,4-TRIAZINE-6,8-DIONES BY REVERSED AZADIENE SYNTHESIS
Shorshnev, S. V.,Esipov, S. E.,Chernyshev, A. I.,Pozharskii, A. F.,Kuz'menko, V. V.,Gulevskaya, A. V.
, p. 191 - 200 (2007/10/02)
It as shown that pyrimido-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, pyridopyrimidine-2,4-diones are formed in good yield.Pyrimido-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.
