69094-40-2

Basic information

• Product Name: diethyl 4,5-dimethylphthalate
• Synonyms: diethyl 4,5-dimethylphthalate
• CAS NO: 69094-40-2
• Molecular Weight: 250.295
• Mol File: 69094-40-2.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: diethyl 4,5-dimethylphthalate(CAS DataBase Reference)
• NIST Chemistry Reference: diethyl 4,5-dimethylphthalate(69094-40-2)
• EPA Substance Registry System: diethyl 4,5-dimethylphthalate(69094-40-2)

Safety Data

• Hazardous Substances Data: 69094-40-2(Hazardous Substances Data)

Upstream product

• 762-21-0 acetylenedicarboxylic acid diethyl ester 
• 5680-10-4 4,5-dimethylphthalic acid 
• 26620-46-2 4,5-dimethyl-cyclohex-4-ene-1r,2c-dicarboxylic acid diethyl ester 
• 26620-46-2 (1S,2S)-4,5-Dimethyl-cyclohex-4-ene-1,2-dicarboxylic acid diethyl ester 
• 141-05-9 Diethyl maleate 
• 513-81-5 2,3-dimethyl-buta-1,3-diene 
• 623-91-6 diethyl Fumarate 
• 76-09-5 2,3-dimethyl-2,3-butane diol 
• 57100-45-5 4,5-Dimethyl-cyclohex-4-ene-1,2-dicarboxylic acid diethyl ester 
• 63012-62-4 4,5-dimethylcyclohexa-1,4-diene-1,2-dicarboxylic acid diethyl ester 

Downstream Products

• 5680-10-4 4,5-dimethylphthalic acid 
• 89-05-4 1,2,4,5-benzenetetracarboxylic acid 
• 60070-05-5 1,2-bis(hydroxymethyl)-4,5-dimethylbenzene 
• 60070-06-6 1,2-bis(bromomethyl)-4,5-dimethylbenzene 
• 1373318-32-1 C₅₇H₄₆O₂ 
• 1373318-36-5 C₈₇H₅₈O 
• 1373318-35-4 C₅₅H₄₂O 

Relevant articles and documents

A method of preparing 1,2,4,5-benzenetetracarboxylic acid or trimellitic acid from pinacol

The invention relates to a method of preparing 1,2,4,5-benzenetetracarboxylic acid or trimellitic acid from pinacol. The method includes a first step of selectively dehydrating the pinacol in an acid/ionic liquid catalytic system to generate 2,-3-dimethyl-1,3-butadiene; a second step of subjecting the 2,-3-dimethyl-1,3-butadiene and maleate or acrylate to a D-A cycloaddition/dehydrogenation tandemreaction to generate an aromatic ring product; and a third step of subjecting the aromatic ring product to hydrolysis and oxidation to prepare the 1,2,4,5-benzenetetracarboxylic acid or the trimellitic acid. The catalytic system adopted in the method is green, and can be recycled. The raw material is a biomass-based platform chemical, and is cheap and easily available. All reaction processes aresimple. The pinacol dehydration reaction, the dehydrogenation reaction of a D-A product and an oxidation reaction are high in activity and selectivity. The novel method for preparing the 1,2,4,5-benzenetetracarboxylic acid and the trimellitic acid which are fine chemicals from the pinacol that is a lignocelluloses based platform chemical is provided by the invention.

Closely stacked oligo(phenylene ethynylene)s: Effect of π-stacking on the electronic properties of conjugated chromophores

In this work, a bicyclo[4.4.1]undecane scaffold is used to hold oligo(phenylene ethynylene) units in a cofacially stacked arrangement along the entire length of the conjugated units. We study the impact that the resulting strong interchain interactions ha

SYNTHESIS OF 1,2-DISUBSTITUTED BENZENES AND BIPHENYLS FROM PHTHALIC ACIDS THROUGH ELECTROREDUCTION FOLLOWED BY ELECTROCYCLIC REACTIONS WITH ALKYNES

Various substituted 1,2-dihydrophthalic acids were synthesized by electroreduction of phthalic acids in excellent yields.The electrocyclic reaction of 1,2-dihydrophthalic acids or the methyl ester with alkynes gave 1,2-disubstituted benzenes and biphenyls in good yields together with fumaric acid or methyl fumarate.