220487-20-7

Basic information

• Product Name: diethyl (3,3-diphenylprop-2-en-1-ylidene)propanedioate
• Synonyms: Diethyl (3,3-diphenylprop-2-en-1-ylidene)malonate
• CAS NO: 220487-20-7
• Molecular Formula: C₂₂H₂₂O₄
• Molecular Weight: 350.4077
• Mol File: 220487-20-7.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 481.549°C at 760 mmHg
• Flash Point: 238.787°C
• Density: 1.12g/cm³
• Vapor Pressure: 0mmHg at 25°C
• Refractive Index: 1.559
• CAS DataBase Reference: diethyl (3,3-diphenylprop-2-en-1-ylidene)propanedioate(CAS DataBase Reference)
• NIST Chemistry Reference: diethyl (3,3-diphenylprop-2-en-1-ylidene)propanedioate(220487-20-7)
• EPA Substance Registry System: diethyl (3,3-diphenylprop-2-en-1-ylidene)propanedioate(220487-20-7)

Safety Data

• Hazardous Substances Data: 220487-20-7(Hazardous Substances Data)

Upstream product

• 1210-39-5 3,3-diphenyl-2-propenal 
• 105-53-3 diethyl malonate 

Relevant articles and documents

Divergent Rearrangements of Vinylcyclopropane into Skipped Diene and Cyclopentene: Mechanism, Scope, and Limitations

Vinylcyclopropanes are versatile intermediates in organic synthesis which undergo various rearrangements. We report a new rearrangement of vinylcyclopropane into skipped diene. A detailed mechanistic study revealed that this transformation involves regioselective ring-opening of the cyclopropane ring followed by 1,2-migration of one of the cyclopropane substituents. Interestingly, our investigations showed that skipped diene is the kinetic product of the process but formation of a more stable cyclopentene is also accessible. The fundamental understanding of the processes involved enabled the development of divergent methodologies allowing to obtain cyclopentene or skipped diene from vinylcyclopropane in a selective and controlled manner.