6048-13-1

Basic information

• Product Name: (E)-1-(triphenylphosphoranylidene)pent-3-en-2-one
• CAS NO: 6048-13-1
• Molecular Weight: 344.393
• Mol File: 6048-13-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (E)-1-(triphenylphosphoranylidene)pent-3-en-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: (E)-1-(triphenylphosphoranylidene)pent-3-en-2-one(6048-13-1)
• EPA Substance Registry System: (E)-1-(triphenylphosphoranylidene)pent-3-en-2-one(6048-13-1)

Safety Data

• Hazardous Substances Data: 6048-13-1(Hazardous Substances Data)

Upstream product

• 1779-49-3 Methyltriphenylphosphonium bromide 
• 10487-71-5 crotonyl chloride 
• 625-35-4 trans-chrotonyl chloride 

Downstream Products

• 1574-40-9 Z-pent-3-en-1-yne 
• 2004-69-5 (E)-3-penten-1-yne 
• 7682-80-6 Triphenyl-trans-crotonylmethyl-phosphoniumhydroxid 
• 6047-87-6 Triphenyl-trans-crotonylmethyl-phosphoniumhydroxid 

Relevant articles and documents

Flash Vacuum Pyrolysis of Stabilised Phosphorus Ylides. Part 1. Preparation of Aliphatic and Therminal Alkynes

Thermal extrusion of Ph3PO from β-oxoalkylidenetriphenylphosphoranes 4 to give the alkynes 5, which under conventional pyrolysis conditions is restricted to cases in which R1 is an electron withdrawing group, has been successfully achieved for R1=H or alkyl by using FVP.The method allows convenient construction of multigram quantities of the alkynes 5 from alkyl halides 1 and allows convenient construction of multigram quantities of the alkynes 5 from alkyl halides 1 and acid chlorides 3 in three steps with good overall yields.Under the conditions used the ylides with R2 = cyclobutyl also undergo less of ethene to provide convenient access to the vinylalkynes 6.