1332456-48-0

Basic information

• Product Name: dimethylphenyl(4-ethoxy-3-methyl-4-oxobut-1-en-2-yl)phosphonium trifluoroacetate
• CAS NO: 1332456-48-0
• Molecular Weight: 378.328
• Mol File: 1332456-48-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: dimethylphenyl(4-ethoxy-3-methyl-4-oxobut-1-en-2-yl)phosphonium trifluoroacetate(CAS DataBase Reference)
• NIST Chemistry Reference: dimethylphenyl(4-ethoxy-3-methyl-4-oxobut-1-en-2-yl)phosphonium trifluoroacetate(1332456-48-0)
• EPA Substance Registry System: dimethylphenyl(4-ethoxy-3-methyl-4-oxobut-1-en-2-yl)phosphonium trifluoroacetate(1332456-48-0)

Safety Data

• Hazardous Substances Data: 1332456-48-0(Hazardous Substances Data)

Upstream product

• 5717-41-9 ethyl 2-methylbuta-2,3-dienoate 
• 76-05-1 trifluoroacetic acid 
• 672-66-2 Dimethyl(phenyl)phosphine 

Relevant articles and documents

PBu3-mediated vinylogous wittig reaction of α-methyl allenoates with aldehydes and mechanistic investigations

A highly stereoselective PBu3-mediated vinylogous Wittig olefination between α-methyl allenoates and a variety of aldehydes is presented as the first example of a practical and synthetically useful vinylogous Wittig reaction. Mechanistic experiments including deuterium-labeling, intermediate entrapment, and NMR monitoring have been deliberately conducted. On the basis of mechanistic investigations, a reliable mechanism for the vinylogous Wittig reaction is proposed, which features a water/phosphine-coassisted allylic phosphorus ylide 1,3-rearrangement pathway, rather than previous retro-Diels-Alder ones. It is noteworthy that mechanistic findings in this work also provide supportive evidence for typical mechanisms of important phosphine-mediated reactions of allenoates.