405316-32-7

Basic information

• Product Name: Butanedioic acid, (1-acetyl-2-oxopropyl)(triphenylphosphoranylidene)-, dimethyl ester
• CAS NO: 405316-32-7
• Molecular Formula: C29H29O6P
• Molecular Weight: 504.519
• Mol File: 405316-32-7.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: Butanedioic acid, (1-acetyl-2-oxopropyl)(triphenylphosphoranylidene)-, dimethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Butanedioic acid, (1-acetyl-2-oxopropyl)(triphenylphosphoranylidene)-, dimethyl ester(405316-32-7)
• EPA Substance Registry System: Butanedioic acid, (1-acetyl-2-oxopropyl)(triphenylphosphoranylidene)-, dimethyl ester(405316-32-7)

Safety Data

• Hazardous Substances Data: 405316-32-7(Hazardous Substances Data)

Upstream product

• 1522-20-9 acetylacetone 
• 762-42-5 dimethyl acetylenedicarboxylate 
• 603-35-0 triphenylphosphine 
• 1704-16-1 3-(1-hydroxyethylidene)-2,4-pentadienone 

Downstream Products

• 1115088-74-8 dimethyl 2-(3,5-dimethyl-1-phenyl-1H-pyrazol-4-yl)-2-butenedioate 

Relevant articles and documents

Introduction of a novel reaction of triacetylmethane: One-pot synthesis of dialkyl-2-(3,1-hydroxyethylidene-2,4-pentanedione-3-yl)-3-(triphenyl phosphoranylidene)-butanedioate

Protonation of reactive 1:1 intermediates produced in the reaction between triphenylphosphine and dialkyl acetylenedicarboxylate by 3-(1-hydroxyethylidene)-2,4-pentanedione leads to vinyl phosphonium salts, which undergo Michael addition with the conjugate base of CH-acid to produce the title compounds in high yield.