33 research outputs found
Combining silver- and organocatalysis: an enantioselective sequential catalytic approach towards pyrano-annulated pyrazoles
Full text linkChemInform Abstract: THE REACTIONS OF NITRILE IMINES WITH AMINO- AND OXO-SUBSTITUTED AZOLES
No full textChemInform Abstract: Studies on 3,5-Diaminopyrazoles: New Routes for the Synthesis of New Pyrazoloazines and Pyrazoloazoles.
No full textChemInform Abstract: REACTIONS WITH HETEROCYCLIC ARYLAZO COMPOUNDS: SYNTHESIS OF NEW 1-AZOLOYLIMIDAZOLONES
No full textChemInform Abstract: ACTIVATED NITRILES IN HETEROCYCLIC SYNTHESIS. A NOVEL SYNTHESIS OF PYRAZOLO(1,5-A)PYRIMIDINES AND PYRANO(2,3-C)PYRAZOLES
No full textChemInform Abstract: NOVEL SYNTHESIS OF PYRAZOLO(5,1-C)-1,2,4-TRIAZOLES, IMIDAZO(1,2-B)PYRAZOLES, AND (1,2,4)-TRIAZOLO(4,3-A)BENZIMIDAZOLES. REACTION OF NITRILE IMINES WITH AMINO- AND OXO-SUBSTITUTED DIAZOLES
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Synthesis of Pyrazolo[5,1–c][1,2,4]triazines, Isoxazolo[3,4-e]pyrazolo-[5,1–c][1,2,4]triazines and Aminopyridones
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Synthesis of 2H-pyrazolo[3,4-b]pyridin-3-oles via cyclization of pyrazolacrylonitriles
No full textThe reaction of 1-acyl-3-amino-5-pyrazolones 1 with ethyl ethoxymethylenecyanoacetate and ethoxymethylenemalononitrile 2 is described. Thermal cyclization in phenyl ether of the obtained pyrazolacrylonitriles 3 provides good yields of pyrazolopyridin-3-ol derivatives 4
