85523-02-0

Basic information

• Product Name: 5,6-diethoxy-1,4-diphenyl-1,4,5,6-tetrahydropyrano[2,3-c]pyrazole
• CAS NO: 85523-02-0
• Molecular Formula: C₂₂H₂₄N₂O₃
• Molecular Weight: 364.4376
• Mol File: 85523-02-0.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 484.9°C at 760 mmHg
• Flash Point: 247.1°C
• Density: 1.19g/cm³
• Vapor Pressure: 4.36E-09mmHg at 25°C
• Refractive Index: 1.599
• CAS DataBase Reference: 5,6-diethoxy-1,4-diphenyl-1,4,5,6-tetrahydropyrano[2,3-c]pyrazole(CAS DataBase Reference)
• NIST Chemistry Reference: 5,6-diethoxy-1,4-diphenyl-1,4,5,6-tetrahydropyrano[2,3-c]pyrazole(85523-02-0)
• EPA Substance Registry System: 5,6-diethoxy-1,4-diphenyl-1,4,5,6-tetrahydropyrano[2,3-c]pyrazole(85523-02-0)

Safety Data

• Hazardous Substances Data: 85523-02-0(Hazardous Substances Data)

Upstream product

• 39142-96-6 (E)-4-benzyliden-1-phenyl-5-pyrazolone 
• 28957-42-8 cis-1,2-diethoxyethylene 
• 26349-94-0 trans-1,2-diethoxyethylene 

Relevant articles and documents

HETERODIENE SYNTHESES-XXV KINETICS OF THE REACTION OF ETHOXYETHENES WITH 1-PHENYL-4-BENZYLIDEN-5-PYRAZOLONE. ACTIVATION ENERGIES VS ENERGY GAINED IN THE CYCLOADDITION.

The kinetics of the reaction between 1-phenyl-4-benzyliden-5-pyrazolone and ethoxyethenes have been studied by quantitative spectroscopic analysis in xylene at various temperatures.These 1,4-cycloadditions are HOMO-ethoxyethene controlled but Sustmann's approximation of the general perturbation equation cannot be used to rationalize the results since meaningless relationships are obtained by plotting the log of the rate constants vs the inverse of ethoxyethene HOMO energies.If the energy gained in the cycloaddition, calculated by MO energies and coefficients, is plotted vs the log of the rate constant a good relationship is obtained which results better if the entropy factor is excluded.