1-heteroaryl-pyrazoles : Stabilization o
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D.S. Iyengar; K.K. Prasad; R.V. Venkataratnam
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Article
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1972
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Elsevier Science
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French
โ 219 KB
Received in ult 9 du (prst 1972; aoospted for publiaatian 16 Augwt 1972) 'tie wish to report thet the pyrazole derivatives (1 -1) which are derived from the reaction of a-hydrazino-azaheterocycles with $-dicarbonyl co.:lpounds or acetylenic esters are true 5-hydroxypyrazoles (A -1. C), stabilized by