20023-43-2

Basic information

• Product Name: prop-1-en-1-ylidenecyclohexane
• Synonyms: Cyclohexane, 1-propenylidene-
• CAS NO: 20023-43-2
• Molecular Formula: C₉H₁₄
• Molecular Weight: 122.2075
• Mol File: 20023-43-2.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 172.3°C at 760 mmHg
• Flash Point: 40°C
• Density: 0.8g/cm³
• Vapor Pressure: 1.79mmHg at 25°C
• Refractive Index: 1.459
• CAS DataBase Reference: prop-1-en-1-ylidenecyclohexane(CAS DataBase Reference)
• NIST Chemistry Reference: prop-1-en-1-ylidenecyclohexane(20023-43-2)
• EPA Substance Registry System: prop-1-en-1-ylidenecyclohexane(20023-43-2)

Safety Data

• Hazardous Substances Data: 20023-43-2(Hazardous Substances Data)

Upstream product

• 6209-75-2 1-ethynyl-1-chlorocyclohexane 
• 917-54-4 methyllithium 
• 5240-32-4 1-acetoxy-1-ethynyl cyclohexane 
• 15681-48-8 lithium dimethylcuprate 
• 676-58-4 methylmagnesium chloride 
• 78-27-3 1-Ethynylcyclohexan-1-ol 
• 133705-69-8 1,1-Pentamethylene-1,2,3-butatriene 
• 5664-20-0 vinylidenecyclohexane 
• 6906-17-8 2,2-dibromo-1-methylene-spiro<2,5>octane 

Downstream Products

• 74044-28-3 (E)-pent-1-en-1-ylcyclohexane 
• 39546-79-7 pentylidenecyclohexane 
• 1173936-75-8 1-cyclohexylidene-2-methyl-5-(methylthio)pentan-3-one 

Relevant articles and documents

Polylithiumorganic compounds - 23. 1: 3,4-dilithio-1,2-butadienes by addition of lithium metal to 1,4-unsymmetrically substituted butatrienes

The synthesis of the highly reactive 1,4-unsymmetrically substituted butatrienes 12a-c is described. When employing a strict synthetic protocol, these alkatrienes react with lithium metal to 3,4-dilithio-1,2-butadienes 20a-c as stable intermediates. The structure of 20 is supported by IR and NMR spectroscopic evidence. The same dianionic intermediate can be prepared in one case by double deprotonation of the 1,2-butadiene 19. Upon derivatization, either 3,4-disubstituted 1,2-butadienes 24, 2,3-disubstituted 1,3-butadienes 25, or 1,4-disubstituted 2-butynes 26 are formed, depending on the nature of the electrophile employed. Copyright