17649-59-1

Basic information

• Product Name: 1,2-Benzenedicarboxylic acid, 4,5-dimethyl-, dimethyl ester
• CAS NO: 17649-59-1
• Molecular Formula: C12H14O4
• Molecular Weight: 222.241
• Mol File: 17649-59-1.mol
• Article Data: 21

Chemical Properties

• CAS DataBase Reference: 1,2-Benzenedicarboxylic acid, 4,5-dimethyl-, dimethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-Benzenedicarboxylic acid, 4,5-dimethyl-, dimethyl ester(17649-59-1)
• EPA Substance Registry System: 1,2-Benzenedicarboxylic acid, 4,5-dimethyl-, dimethyl ester(17649-59-1)

Safety Data

• Hazardous Substances Data: 17649-59-1(Hazardous Substances Data)

Usage

Molecular weight

194.18 g/mol

Appearance

Clear, colorless liquid

Odor

Faint fruity

Hazard classification

Low hazard chemical

Main use

Precursor in the production of polyester fibers, films, and resins

Applications

Production of plastic bottles, food packaging, and other consumer products

Toxicity

Low toxicity

Environmental impact

Low environmental impact

Handling and transportation

Commonly handled and transported in bulk as a chemical intermediate

Upstream product

• 95-47-6 o-xylene 
• 6832-16-2 methyl diazoacetate 
• 63012-62-4 4,5-dimethylcyclohexa-1,4-diene-1,2-dicarboxylic acid diethyl ester 
• 124-41-4 sodium methylate 
• 115076-29-4 (η1-3,4-dimethyl-1-cyanophosphole-P)pentacarbonyltungsten 
• 501-65-5 diphenyl acetylene 
• 762-42-5 dimethyl acetylenedicarboxylate 
• 101200-20-8 (7-β-chloroethyl 7-phosphanorbornadiene)pentacarbonyltungsten 
• 82265-64-3 syn-[5,6-dimethyl-2,3-bis(methoxycarbonyl)-7-phenyl-7-phosphanorbornadiene]pentacarbonyltungsten 
• 998-40-3 tributylphosphine 
• 1176082-08-8 4,5-dimethyl-3,6-bis(trimethylsilyl)phthalic acid dimethyl ester 
• 14309-24-1 dimethyl 4,5-dimethylcyclohexa-1,4-diene-1,2-dicarboxylate 
• 1829-60-3 dimethyl 7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate 
• 513-81-5 2,3-dimethyl-buta-1,3-diene 

Downstream Products

• 5680-10-4 4,5-dimethylphthalic acid 
• 1353640-13-7 6,13-dihydropentacene-2,3,9,10-tetracarboxylic acid tetrakis(3,5-bis(3,5-dimethoxy)benzyloxy)ester 
• 1300042-37-8 BrH*C₃₇H₄₁N₃O₉ 
• 56392-71-3 4,5-Dimethyl-2-(2-nitro-propionyl)-benzoic acid methyl ester 
• 56392-72-4 4,5-Dimethyl-2-(2-nitro-propionyl)-benzoic acid 
• 49561-92-4 5,6-dimethyl-2-nitro-1H-indene-1,3(2H)-dione 
• 69094-41-3 1.2-Dimethyl-4.5-bis-(2.4.5-trimethylphenethyl)benzol 
• 18779-88-9 1,1'-(1,2-ethanediyl)bis-(2,4,5-trimethylbenzene) 
• 25445-42-5 4,5-dimethylbenzene-1,2-dicarbaldehyde 

Relevant articles and documents

Preparation of Silole Derivatives and Their Reactions with Dimethyl Acetylenedicarboxylate

Reaction of silone derivatives such as 1,1,3,4-tetramethylsilole (1) and 2,3-dimethyl-5-silaspironona-1,3-diene (2) with dimethyl acetylenedicarboxylate (DMADC) were investigated.It was found that the reactions of 1 and 2 with DMADC in toluene gave 7-membered ring componds; trimethyl 7-methoxy-3,3,3',4'-tetramethyl-6-oxa-3-sila-1,2-benzocyclohepta-1,4-diene-4,5,6'-tricarboxylate and trimethyl 5-methoxy-8,9-dimethylspiro-2,3,6-tricarboxylate, respectively.

A short synthetic route to a hybrid molecule benzosultine-sulfone via [2+2+2] cyclotrimerization using Mo(CO)6

Here, we report an improved and short synthetic route to benzosultine-sulfone via [2+2+2] cyclotrimerization as a key step, starting with dipropargyl ether and 1,4-dibromo-2-butyne with an overall yield of 16%.

Diels-Alder reactions: The effects of catalyst on the addition reaction

Abstract The reaction between 2,3-dimethyl-1,3-butadiene and dimethyl 7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate is efficiently achieved with small amounts of catalyst, i.e. phenol, AcOH, nafion, and β-cyclodextrin. Exo-diastereoselective cycloa