116611-90-6

Basic information

• Product Name: Phosphoric acid bis-(2,3-diphenyl-quinoxalin-6-yl) ester methyl ester
• Synonyms: Phosphoric acid bis-(2,3-diphenyl-quinoxalin-6-yl) ester methyl ester
• CAS NO: 116611-90-6
• Molecular Weight: 672.679
• Mol File: 116611-90-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Phosphoric acid bis-(2,3-diphenyl-quinoxalin-6-yl) ester methyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphoric acid bis-(2,3-diphenyl-quinoxalin-6-yl) ester methyl ester(116611-90-6)
• EPA Substance Registry System: Phosphoric acid bis-(2,3-diphenyl-quinoxalin-6-yl) ester methyl ester(116611-90-6)

Safety Data

• Hazardous Substances Data: 116611-90-6(Hazardous Substances Data)

Upstream product

• 67-56-1 methanol 
• 5227-55-4 2,3-diphenyl quinoxaline N-oxide 

Relevant articles and documents

An unexpected course of the Meisenheimer reaction : aryl phosphates in the reaction of phosphoryl chloride with 2,3-diphenylquinoxaline-N1-oxide.

Contrary to what is observed with other ?-deficient heteroaromatic N-oxides, the reaction of 2,3-diphenylquinoxaline-N1-oxide with OPCl3 gives only very poor yields of chlorinated quinoxalines.It is shown that the major product arises from an unprecedented attack by the nucleophilic oxygen atom of the reagent at a carbon atom of the homocycle of the O-phosphorylated N-oxide, leading ultimately to the corresponding mono- (or di-) aryl ester of phosphoric acid.Using a much smaller excess of OPCl3 and dilution of the medium with an inert solvent strongly increase the yield of chlorination products.It is suggested that, after the initial O-phosphorylation, phosphate formation might be the primary step in all the Meisenheimer reactions.