82755-32-6

Basic information

• Product Name: 5-tert-Butyl-3-methyl-3,4-dihydro-2H-pyrazol-3-ol
• CAS NO: 82755-32-6
• Molecular Weight: 156.228
• Mol File: 82755-32-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 5-tert-Butyl-3-methyl-3,4-dihydro-2H-pyrazol-3-ol(CAS DataBase Reference)
• NIST Chemistry Reference: 5-tert-Butyl-3-methyl-3,4-dihydro-2H-pyrazol-3-ol(82755-32-6)
• EPA Substance Registry System: 5-tert-Butyl-3-methyl-3,4-dihydro-2H-pyrazol-3-ol(82755-32-6)

Safety Data

• Hazardous Substances Data: 82755-32-6(Hazardous Substances Data)

Upstream product

• 7307-04-2 acetylpinacolin 

Relevant articles and documents

INVESTIGATIO OF THE MECHANISMS OF FORMATION OF HETEROCYCLES BY NMR SPECTROSCOPY. INTERMEDIATES IN THE PRODUCTION OF PYRAZOLES FROM 1,3-DIKETONES AND HYDRAZINES

The structure of the intermediates formed in the reaction of 1,3-diketones RCOCH2COCH3 (R = Me, Et, t-Bu, Ph, CF3) with hydrazines NH2NHR' (R'= H, Me) in methanol and chloroform was determined by NMR spectroscopy in the normal and flow techniques.When R' = H, the reaction takes place through the formation of dihydroxypyrazolidine and 5-hydroxy-2-pyrazolines; for R'= Me, in addition, intermediate products with ketohydroxyazine and ketoenehydrazone structures were detected.A scheme with their participation is proposed for the formation of the isomeric pyrazoles.A pre-equilibrium between the 1,3-diketone, its hydrazinium salt in the Z,Z configuration, and the anion in the E,Z configuration was detected.The reaction rate of the ketone form of the 1,3-diketone is significantly higher than the reaction rate of the enol.