Syntheis of Some New Pyrazolotriazines, Pyrazolothiazines and Pyrazolopyrimidines
When the pyrazole derivatives 3a,b were treated with triethyl orthoformate, the pyrazolotriazinethiones 5a,b were obtained.These were S-alkylated to give compounds 6a-d.Treatment of 5a,b with hydrazine hydrate in ethanol afforded 7,8 respectively.Benzylid
El-Dean, A. M. Kamal,Geies, A. A.
p. 2255 - 2269
(2007/10/03)
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