1255771-99-3

Basic information

• Product Name: tert-butyl 5-(2-methylphenyl)-3-phenyl-4,5-dihydro-1H-pyrazole-1-carboxylate
• CAS NO: 1255771-99-3
• Molecular Weight: 336.434
• Mol File: 1255771-99-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: tert-butyl 5-(2-methylphenyl)-3-phenyl-4,5-dihydro-1H-pyrazole-1-carboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: tert-butyl 5-(2-methylphenyl)-3-phenyl-4,5-dihydro-1H-pyrazole-1-carboxylate(1255771-99-3)
• EPA Substance Registry System: tert-butyl 5-(2-methylphenyl)-3-phenyl-4,5-dihydro-1H-pyrazole-1-carboxylate(1255771-99-3)

Safety Data

• Hazardous Substances Data: 1255771-99-3(Hazardous Substances Data)

Upstream product

• 870-46-2 t-butoxycarbonylhydrazine 
• 16619-28-6 1-phenyl-3-o-methylphenyl-2-propen-1-one 

Relevant articles and documents

Enantioselective phase-transfer catalysis: Synthesis of pyrazolines

All paired up: Under catalytic phase-transfer conditions the formation of a chiral ion pair between quininium cation 1 and hydrazine anion 2 led to an enantioselective aza-Michael cyclocondensation domino reaction to furnish pyrazolines. A convenient one-pot protocol allowed exchange of the functional group (R1) on the nitrogen atom.