2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone

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2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone Basic information
Product Name:2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone
Synonyms:bismethoxycarbonyldiphenylcyclopentadienone;DIMETHYL 3,4-DIPHENYLCYCLOPENTADIENONE-2,5-DICARBOXYLATE;3,4-DIPHENYLCYCLOPENTADIENONE-2,5-DICARBOXYLIC ACID DIMETHYL ESTER;Dimethyl 3,4-Diphenylcyclopentadienone-2,5-dicarboxylate 3,4-Diphenylcyclopentadienone-2,5-dicarboxylic Acid Dimethyl Ester;2-oxo-4,5-diphenylcyclopenta-3,5-diene-1,3-dicarboxylic acid dimethyl ester;3,5-Cyclopentadiene-1,3-dicarboxylic acid, 2-oxo-4,5-diphenyl-, dimethyl ester;Dimethyl 2-oxo-4,5-diphenylcyclopenta-3,5-diene-1,3-dicarboxylate;2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone
CAS:16691-79-5
MF:C21H16O5
MW:348.35
EINECS:
Product Categories:
Mol File:16691-79-5.mol
2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone Structure
2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone Chemical Properties
Melting point 175 °C
Boiling point 445.4±45.0 °C(Predicted)
density 1.302±0.06 g/cm3(Predicted)
form powder to crystal
color Light yellow to Brown
Safety Information
HS Code 2918.30.3000
MSDS Information
2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone Usage And Synthesis
Uses2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone is used a reagent for cycloaddition reactions.
PreparationPreparative Method of 2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone: equimolar amounts of benzil and dimethyl 2-propanone-1,3-dicarboxylate in MeOH or EtOH with OH- are allowed to react at 25 °C for 1 day to give the intermediate dimethyl 3,4-diphenyl-4- hydroxycyclopent-2-enone-2,5-dicarboxylate in 70-96% yield. Treatment of the intermediate with acid in benzene or in Ac2O with heating gives the dienone in 98% yield containing 3% of the Diels-Alder dimer[1-2].
References1. Cookson, R. C.; Henstock, J. B.; Hudec, J.; Whitear, B. R. D. JCS(C) 1967, 1986.
2. White, D. M. JOC 1974, 39, 1951.
2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone Preparation Products And Raw materials
Tag:2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone(16691-79-5) Related Product Information
Dicyclopentadiene 2,3-Diphenyl-1,3-butadiene 1,2,3,4-Tetramethyl-1,3-cyclopentadiene 2-n-Propyl-2(E)-pentenoicacid METHYL SORBATE 2-METHYLENE-PENTANEDIOIC ACID DIMETHYL ESTER 1,3-Acetonedicarboxylic acid Dimethyl 1,3-acetonedicarboxylate 2,5-BIS(METHOXYCARBONYL)-3,4-DIPHENYLCYCLOPENTADIENONE Sorbic acid TRANS,TRANSMUCONALDEHYDE trans,trans-Muconic acid 2,5-Dimethyl-3,4-diphenylcyclopentadienone 5-METHOXY-3-OXOVALERIC ACID METHYL ESTER