A short and expeditious regiospecific synthesis of novel pyrazoles
α-Cyano-β-enaminones, obtained by regioselective acylation of β-aminocrotononitrile, are smoothly and regiospecifically converted into substituted pyrazoles in good to excellent yields.
Chowdhury, S. K. Dutta,Sarkar, Mili,Mahalanabis, Kumar K.
p. 746 - 748
(2007/10/03)
Synthesis of N-phenylpyrrole and pyrazole amidines and related diamines
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Jarvest,Marshall
p. 1401 - 1403
(2007/10/02)
Base-induced ring cleavage of 4-functionalized-3-unsubstituted isoxazoles. Synthesis of 5-aminoazoles and 4-cyanoazoles [1]
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Alberola,Antolin,Gonzalez,et al.
p. 1035 - 1038
(2007/10/02)
NEW FUNCTIONALIZED PYRAZOLES FROM ISOXAZOLOPYRIDAZINONES
Treatment of 3-methylisoxazolopyridazin-7(6H)-ones (1a-d) with dilute NaOH affords in good yields new pyrazole derivatives which can be regarded as building blocks for condensed heterocycles with potential biological activity.