Chinese Japanese Germany Korea
ChemicalBook >> CAS DataBase List >>2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone

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

2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone Structure
2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone structure
CAS No.
16691-79-5
Chemical Name:
2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone
Synonyms
Dimethyl 2-oxo-4,5-diphenylcyclopenta-3,5-diene-1,3-dicarboxylate;bismethoxycarbonyldiphenylcyclopentadienone;2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone;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 3,4-Diphenylcyclopentadienone-2,5-dicarboxylate 3,4-Diphenylcyclopentadienone-2,5-dicarboxylic Acid Dimethyl Ester
CBNumber:
CB7198203
Molecular Formula:
C21H16O5
Molecular Weight:
348.35
MDL Number:
MFCD00111095
MOL File:
16691-79-5.mol
MSDS File:
SDS
Last updated:2026-09-12 18:54:44
Request For Quotation

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

Risk and Safety Statements

HS Code  2918.30.3000

2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone price More Price(9)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
TCI Chemical B1962 2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone 16691-79-5 1g $84 2026-04-30 Buy
TCI Chemical B1962 2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone 16691-79-5 5g $283 2026-04-30 Buy
aablocks AA001WXZ Dimethyl 2-oxo-4,5-diphenylcyclopenta-3,5-diene-1,3-dicarboxylate 16691-79-5 5g $227 2026-05-28 Buy
Crysdot CD12135192 Dimethyl 2-oxo-4,5-diphenylcyclopenta-3,5-diene-1,3-dicarboxylate 95+% 16691-79-5 5g $427 2026-05-27 Buy
AHH MT-31931 2,5-bis(Methoxycarbonyl)-3,4-diphenylcyclopentadienone 97% 5g $555 2026-05-26 Buy
Product number Packaging Price Buy
B1962 1g $84 Buy
B1962 5g $283 Buy
AA001WXZ 5g $227 Buy
CD12135192 5g $427 Buy
MT-31931 5g $555 Buy

2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone Chemical Properties, Uses, Production

Uses

2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone is used a reagent for cycloaddition reactions.

Preparation

Preparative 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].

References

1. 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

Raw materials

Preparation Products

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

Global Suppliers ( 29)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
TOKYO CHEMICAL INDUSTRY CO., LTD. 03-36680489 Sales-JP@TCIchemicals.com Japan 28364 80
TCI Europe 320-37350700 sales@tcieurope.eu Europe 23654 75
TCI AMERICA 800-4238616 sales@tciamerica.com Americas 23636 75
9ding chemical ( Shanghai) Limited 4009209199 sales@9dingchem.com China 22497 55
Amadis Chemical Company Limited 571-89925085 sales@amadischem.com China 131885 58
Aikon International Limited 025-58859352 19370895928 sales01@aikonchem.com China 15078 58
Supplier Advantage
J & K SCIENTIFIC LTD. 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 62
TCI (Shanghai) Development Co., Ltd. 81
Energy Chemical 61
TOKYO CHEMICAL INDUSTRY CO., LTD. 80
TCI Europe 75
TCI AMERICA 75
9ding chemical ( Shanghai) Limited 55
Amadis Chemical Company Limited 58
Aikon International Limited 58

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

2,5-BIS(METHOXYCARBONYL)-3,4-DIPHENYLCYCLOPENTADIENONE(16691-79-5)MS2,5-BIS(METHOXYCARBONYL)-3,4-DIPHENYLCYCLOPENTADIENONE(16691-79-5)1HNMR2,5-BIS(METHOXYCARBONYL)-3,4-DIPHENYLCYCLOPENTADIENONE(16691-79-5)13CNMR2,5-BIS(METHOXYCARBONYL)-3,4-DIPHENYLCYCLOPENTADIENONE(16691-79-5)IR12,5-BIS(METHOXYCARBONYL)-3,4-DIPHENYLCYCLOPENTADIENONE(16691-79-5)IR2

16691-79-5 (2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone) Related Search:

Dicyclopentadiene 2-Methylene-pentanedioic acid dimethyl ester 5-Methoxy-3-oxovaleric acid methyl ester 2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone Methyl sorbate
2,3-Diphenyl-1,3-butadiene 1,2,3,4-Tetramethyl-1,3-cyclopentadiene 2-n-Propyl-2(E)-pentenoicacid 1,3-Acetonedicarboxylic acid Dimethyl 1,3-acetonedicarboxylate
Sorbic acid TRANS,TRANSMUCONALDEHYDE trans,trans-Muconic acid 2,5-Dimethyl-3,4-diphenylcyclopentadienone

1of3

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 16691-79-5 C21H16O5