1474-93-7

Basic information

• Product Name: 1,3-Butanedione, 1-phenyl-2-(triphenylphosphoranylidene)-
• CAS NO: 1474-93-7
• Molecular Formula: C28H23O2P
• Molecular Weight: 422.463
• Mol File: 1474-93-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1,3-Butanedione, 1-phenyl-2-(triphenylphosphoranylidene)-(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3-Butanedione, 1-phenyl-2-(triphenylphosphoranylidene)-(1474-93-7)
• EPA Substance Registry System: 1,3-Butanedione, 1-phenyl-2-(triphenylphosphoranylidene)-(1474-93-7)

Safety Data

• Hazardous Substances Data: 1474-93-7(Hazardous Substances Data)

Usage

Physical state

Yellow crystalline solid

Usage

Flavoring agent and fragrance additive in food and cosmetic industries

Odor

Strong sweet and fruity

Pharmacological and biological activities

Antimicrobial, antifungal, and antioxidant properties

Health risks

Respiratory and skin irritation

Safety precautions

Handle with caution

Upstream product

• 603-35-0 triphenylphosphine 
• 93-91-4 1-phenylbutan-1,3-dione 

Downstream Products

• 374560-80-2 [(α-acetyl-α-benzoylmethylenetriphenylphosphorane)2HgCl2] 
• 374560-83-5 [(α-acetyl-α-benzoylmethylenetriphenylphosphorane)2Hg2Br4] 
• 374560-85-7 [(α-acetyl-α-benzoylmethylenetriphenylphosphorane)2Hg2I4] 
• 6710-62-9 1-phenyl-2-butyn-1-one 
• 1817-57-8 4-phenyl-3-butyne-2-one 

Relevant articles and documents

Reaction of Triphenylphosphine Radical Cation with 1,3-Dicarbonyl Compounds: Electrochemical One-Step Preparation of Dioxomethylenetriphenylphosphoranes

Electrochemical oxidation of Ph3P (1) in MeCN in the presence of 1,3-dicarbonyl compounds, R1COCH2COR2 (3), with HClO4 as the supporting electrolyte resulted in the formation of the phosphonium salts, Ph3P+ -CH(COR1)COR2 ClO4- (4), provided that R1 and/or R2 is a phenyl group.On the other hand, electrolysis in CH2Cl2 with 2,6-lutidinium perchlorate gave the phosphoranes, Ph3P=C(COR1)COR2 (5), directly from 1 and 3 in fair to excellent yields: in this case, R1 or R2 need not necessarily be a phenyl group.Thus, the electrolysis is shown to be a convenient method to prepare 5 in a single step.Plausible processes for the formation of 4 and 5 are proposed, involving the reaction of electrochemically generated Ph3P+. with the enol form of 3 as the keystep.Keywords - triphenylphosphine; 1,3-dicarbonyl compound; dioxomethyltriphenylphosphonium perchlorate; dioxomethylenetriphenylphosphorane; electrochemical oxidation; constant current electrolysis