98475-02-6

Basic information

• Product Name: Butanedioic acid, 2,3-dimethyl-2,3-diphenyl-, dimethyl ester
• CAS NO: 98475-02-6
• Molecular Formula: C20H22O4
• Molecular Weight: 326.392
• Mol File: 98475-02-6.mol
• Article Data: 8

Chemical Properties

• CAS DataBase Reference: Butanedioic acid, 2,3-dimethyl-2,3-diphenyl-, dimethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Butanedioic acid, 2,3-dimethyl-2,3-diphenyl-, dimethyl ester(98475-02-6)
• EPA Substance Registry System: Butanedioic acid, 2,3-dimethyl-2,3-diphenyl-, dimethyl ester(98475-02-6)

Safety Data

• Hazardous Substances Data: 98475-02-6(Hazardous Substances Data)

Upstream product

• 31508-44-8 2-phenylpropionic acid methyl ester 
• 84892-13-7 methyl 2-bromo-2-phenylpropanoate 
• 97562-97-5 α-bromo-α-phenylpropionyl chloride 
• 25145-43-1 2-phenylpropionyl chloride 
• 492-37-5 hydratropic acid 
• 13448-77-6 (R)-(-)-methyl 2-phenyl-2-(phenylthio)propionate 
• 32346-08-0 ((E)-1-Methoxy-2-phenyl-propenyloxy)-trimethyl-silane 

Downstream Products

• 38023-36-8 1,4-diphenyl-2,3-dimethylbutadiene-1,3 
• 911794-79-1 2,3-dimethyl-2,3-diphenylbutanediol-1,4 

Relevant articles and documents

The synthesis and stereospecific solid-state photodecarbonylation of hexasubstituted meso- and d,l-ketones

Tertiary carbanions were trapped with half an equivalent of diphosgene to give meso- and d,l-hexasubstituted ketones in moderate yields and modest diastereoselectivities. The ketones were also synthesized by a step-wise synthesis in which the carbonyl group was first installed as an acid before activation and the second nucleophilic attack. This second method gave lower yields but similar diastereoselectivites. Steric limits of both methods were also determined. The photolysis of the resulting crystalline ketones gave a mixture of products in solution, but took place chemoselectively and diastereospecifically in the solid-state. The Royal Society of Chemistry and Owner Societies.

Thermal cleavage of the 3,4 bond in a cyclobutane-1,2-dione

Pyrolysis of trans-3,4-dimethyl-3,4-diphenylcyclobutane-1,2-dione results in an isomerization interpreted to involve formation of a dioxatetramethyleneethane biradical. This biradical would arise from a hitherto unprecedented 3,4 bond cleavage.

Oxidative Dimerization of Lithium-Enolates of Esters Promoted by Titanium Tetrachloride

Oxidative dimerization of lithium ester enolates is effectively promoted by TiCl4, which serves as a new and efficient synthetic method.Mechanistic study indicates that the reaction proceeds via a radical-like mechanism, but it is not a free radical process.