73151-81-2

Basic information

• Product Name: 3-methyl-4-phenethyl-1H-pyrazole
• Synonyms: 3-methyl-4-phenethyl-1H-pyrazole
• CAS NO: 73151-81-2
• Molecular Weight: 186.257
• Mol File: 73151-81-2.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3-methyl-4-phenethyl-1H-pyrazole(CAS DataBase Reference)
• NIST Chemistry Reference: 3-methyl-4-phenethyl-1H-pyrazole(73151-81-2)
• EPA Substance Registry System: 3-methyl-4-phenethyl-1H-pyrazole(73151-81-2)

Safety Data

• Hazardous Substances Data: 73151-81-2(Hazardous Substances Data)

Upstream product

• 64884-77-1 4-methyl-N'-(4-phenylbutan-2-ylidene)benzenesulfonohydrazide 
• 75-20-7 calcium carbide 

Relevant articles and documents

Calcium carbide as the acetylide source: Transition-metal-free synthesis of substituted pyrazoles via [1,5]-sigmatropic rearrangements

Under transition-metal-free conditions, calcium carbide was used as the acetylide source to react with a wide range of N-tosylhydrazones derived from aldehydes or ketones, affording various substituted pyrazoles in good yields with high regioselectivities. The transformations go through [3 + 2] cycloadditions followed by [1,5]-sigmatropic rearrangements, which are supported by deuterium-labeling experiments.