5071-69-2

Basic information

• Product Name: methyl 4-(4-bromobenzylidene)-1-cyclohexyl-2-methyl-5-oxo-4,5-dihydro-1H-pyrrole-3-carboxylate
• CAS NO: 5071-69-2
• Molecular Formula: C₂₀H₂₂BrNO₃
• Molecular Weight: 404.2976
• Mol File: 5071-69-2.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 545.9°C at 760 mmHg
• Flash Point: 284°C
• Density: 1.407g/cm³
• Vapor Pressure: 5.65E-12mmHg at 25°C
• Refractive Index: 1.624
• CAS DataBase Reference: methyl 4-(4-bromobenzylidene)-1-cyclohexyl-2-methyl-5-oxo-4,5-dihydro-1H-pyrrole-3-carboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: methyl 4-(4-bromobenzylidene)-1-cyclohexyl-2-methyl-5-oxo-4,5-dihydro-1H-pyrrole-3-carboxylate(5071-69-2)
• EPA Substance Registry System: methyl 4-(4-bromobenzylidene)-1-cyclohexyl-2-methyl-5-oxo-4,5-dihydro-1H-pyrrole-3-carboxylate(5071-69-2)

Safety Data

• Hazardous Substances Data: 5071-69-2(Hazardous Substances Data)

Upstream product

• 67-66-3 chloroform 
• 4935-01-7 methyl bicyclo<1.1.0>butane-1-carboxylate 
• 1605-72-7 dichlorocarbene 

Relevant articles and documents

Decomposition and Isomerization of Bridgehead Cis 1,2-Diazenes (Azoalkanes)

Four acyclic cis 1,2-diazenes, azo-1-adamantane (cis-ada), azo-bicyclooctane (cis-), azo-1-bicycloheptane (cis-), and azo-1-bicyclohexane (cis-) have been generated by UV irradiation of the corresponding trans-isomers.These compounds differ greately in stability, cis- easily surviving at 100 deg C and cis-ada not being isolable.Whereas cis- and cis-only isomerize back to trans on heating, the other two compounds undergo competing loss of nitrogen.The observation that the energy of the transition state for isomerization remains at 42 +/- 1 kcal mol-1 regardless of the cis ground state energy is used to argue that thermal isomerization proceeds via semilinearization rather than rotation.A remarkable correlation of cis ground state energy with cis n,?* excitation energy has emerged from this study.