39142-89-7

Basic information

• Product Name: 3-benzyl-3-methoxyisobenzofuran-1(3H)-one
• Synonyms: 3-benzyl-3-methoxyisobenzofuran-1(3H)-one
• CAS NO: 39142-89-7
• Molecular Weight: 254.285
• Mol File: 39142-89-7.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 3-benzyl-3-methoxyisobenzofuran-1(3H)-one(CAS DataBase Reference)
• NIST Chemistry Reference: 3-benzyl-3-methoxyisobenzofuran-1(3H)-one(39142-89-7)
• EPA Substance Registry System: 3-benzyl-3-methoxyisobenzofuran-1(3H)-one(39142-89-7)

Safety Data

• Hazardous Substances Data: 39142-89-7(Hazardous Substances Data)

Upstream product

• 4767-55-9 (E)-3-benzylidene-3H-isobenzofuran-1-one 
• 67-56-1 methanol 
• 4767-56-0 (Z)-3-benzylidenephthalide 
• 85-52-9 2-Benzoylbenzoic acid 
• 17582-84-2 2-(1-phenylethenyl)benzoic acid 

Downstream Products

• 67-56-1 methanol 

Relevant articles and documents

Lactonization with concomitant 1,2-aryl migration and alkoxylation mediated by dialkoxyphenyl iodides generatedin situ

A series of alkoxylated isobenzofuranones were conveniently synthesized from the reaction of 2-(1-arylvinyl)benzoic acids with PhI(OR)2, generatedin situfrom the reaction of iodosobenzene (PhIO) with alkyl alcohols. This hypervalent iodine medi

Reactions of Carbonyl Compounds in Basic Solutions. Part 9. Methoxide-catalysed Cyclization of Benzylidenephthalides and Methyl o-Phenylacetylbenzoates

The detailed mechanism of the methoxide-catalysed rearrangement of substituted benzylidenephthalides and both normal and pseudo methyl o-phenylacetylbenzoates to form 2-phenylindane-1,3-diones has been studied.A rate-acidity function correlation for the reactions in methanolic dimethyl sulphoxide (DMSO) shows a linear increase in rate with increasing H- to reach a maximum in rate before decreasing, except for the p-nitro substrate.This derivative shows a rate decrease throughout the H- range.The ρ values in methanol and in 94 mol percent methanolic DMSO are 1.7 and -1.6, respectively.The kinetic isotope effect has been observed with kH/kD 0.8-1.0.The equilibrium constants for ring-chain tautomerism of the methyl o-phenylacetylbenzoates have been determined and shown to be independent of substituent and solvent composition.The rate-determining step is the intramolecular attack of the anion of the normal ester on the ester carbonyl group.In methanol and methanolic DMSO of high methanol content this is preceded by the ionization equilibrium of the normal ester.In methanolic DMSO of low methanol content and for the p-nitro substrate, the initial state is the anion itself.