83199-82-0

Upstream product

• 86302-43-4 (tert-Butoxycarbonylmethylene)triphenylphosphorane 
• 625-36-5 2-chloropropionyl chloride 
• 107-59-5 tert-Butyl chloroacetate 
• 603-35-0 triphenylphosphine 

Downstream Products

• 83200-04-8 (Z)-3-But-3-enyl-8-hydroxy-6-methyl-1-(triphenyl-λ⁵-phosphanylidene)-oct-5-en-2-one 
• 83199-86-4 tert-butyl 4-methyl-3-oxo-2-(triphenylphosphoranylidene)nonanoate 
• 83199-89-7 tert-butyl 3-oxo-5-phenyl-2-(triphenylphosphoranylidene)pentanoate 
• 83199-87-5 tert-butyl 3-oxo-4-pentyl-2-(triphenylphosphoranylidene)nonanoate 
• 83200-03-7 8-acetoxy-3-(3-buten-1-yl)-6-methyl-1-(triphenylphosphoranylidene)-(Z)-5-octen-2-one 
• 83199-88-6 tert-butyl 5-(1,3-dithian-2-yl)-4-methyl-3-oxo-2-(triphenylphosphoranyllidene)pentanoate 
• 83199-90-0 tert-butyl 3-oxo-5-phenyl-4-propyl-2-(triphenylphosphoranylidene)pentanoate 
• 83200-02-6 tert-butyl 4-(3-buten-1-yl)-7-methyl-3-oxo-9-<(tetrahydro-2H-pyran-2-yl)oxy>-2-(triphenylphosphoranylidene)-(Z)-6-nonenoate 
• 16640-69-0 4-phenyl-1-(triphenylphosphoranylidene)butan-2-one 
• 65171-95-1 tert-butyl 1-benzyl-3-hydroxypyrrole-2-carboxylate 
• 117917-44-9 1-[2-(3,4-Dimethoxy-phenyl)-ethyl]-2-hydroxy-3-oxo-pyrrolidine-2-carboxylic acid tert-butyl ester 
• 117939-84-1 1-[2-(3,4-Dimethoxy-phenyl)-ethyl]-3-hydroxy-1H-pyrrole-2-carboxylic acid tert-butyl ester 
• 117917-43-8 1-Benzyl-2-hydroxy-3-oxo-pyrrolidine-2-carboxylic acid tert-butyl ester 
• 83199-83-1 tert-butyl 3-oxo-2-(triphenylphosphoranylidene)-4-pentenoate 

Relevant academic research and scientific papers

Vinyl tricarbonyl compounds and methods of making the same

A vinyl tricarbonyl compound of the formula STR1 or its monohydrate of the formula STR2 wherein R1 is a hydrogen, halogen, unsubstituted or substituted C1 to C30 alkyl, unsubstituted or substituted aryl, arylalkyl, and cycloalkyl with 3 to 7 carbon atoms, R2 is hydrogen, halogen, unsubstituted or substituted C1 to C30 alkyl, unsubstituted or substituted aryl, arylalkyl, cycloalkyl with 3 to 7 carbon atoms, cyano, nitro, or a heterocyclic, R3 is hydrogen, halogen, unsubstituted or substituted C1 to C30 alkyl, unsubstituted or substituted aryl, arylalkyl, cycloalkyl with 3 to 7 carbon atoms, cyano, nitro, or a heterocyclic, and R4 is unsubstituted or substituted C1 to C30 alkyl, unsubstituted or substituted aryl, arylalkyl, cycloalkyl are 3 to 7 carbon atoms. Such vinyl tricarbonyl compound is effective against tumor cells.

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.