83199-86-4

Basic information

• Product Name: tert-butyl 4-methyl-3-oxo-2-(triphenylphosphoranylidene)nonanoate
• Synonyms: tert-butyl 4-methyl-3-oxo-2-(triphenylphosphoranylidene)nonanoate
• CAS NO: 83199-86-4
• Molecular Weight: 502.634
• Mol File: 83199-86-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: tert-butyl 4-methyl-3-oxo-2-(triphenylphosphoranylidene)nonanoate(CAS DataBase Reference)
• NIST Chemistry Reference: tert-butyl 4-methyl-3-oxo-2-(triphenylphosphoranylidene)nonanoate(83199-86-4)
• EPA Substance Registry System: tert-butyl 4-methyl-3-oxo-2-(triphenylphosphoranylidene)nonanoate(83199-86-4)

Safety Data

• Hazardous Substances Data: 83199-86-4(Hazardous Substances Data)

Upstream product

• 603-35-0 triphenylphosphine 
• 86302-43-4 (tert-Butoxycarbonylmethylene)triphenylphosphorane 
• 109-72-8 n-butyllithium 
• 83199-83-1 tert-butyl 3-oxo-2-(triphenylphosphoranylidene)-4-pentenoate 
• 74-88-4 methyl iodide 
• 83199-82-0 t-Butyl 5-Chloro-3-oxo-2-(triphenylphosphoranylidene)-pentanoate 
• 107-59-5 tert-Butyl chloroacetate 

Downstream Products

• 6137-08-2 3-methyloctan-2-one 

Relevant articles and documents

Charge-Directed Conjugate Addition Reactions in the Preparation of Substituted Methyl Ketones

Charge-directed conjugated addition reactions of the tert-butyl esters of α,β-unsaturated acylphosphoranes 2 have been used to prepare a variety of substituted methyl ketones.Substituted ylides 6 are prepared by alkylating ylide anions 4 generated by the addition of nucleophiles to 2 and are converted under acidic conditions to substituted (acylmethylene)phosphoranes 12 which are hydrolyzed to methyl ketones.The utility of these unsaturated acylphosphoranes as methyl vinyl ketone equivalents in conjugate addition-alkylation reactions is demonstrated in a synthesis of the racemic form of the sex pheromone of the California red scale, 14.