37902-49-1

Basic information

• Product Name: 1,2-Benzenedicarboxylic acid, 3,6-dimethyl-, dimethyl ester
• CAS NO: 37902-49-1
• Molecular Formula: C12H14O4
• Molecular Weight: 222.241
• Mol File: 37902-49-1.mol
• Article Data: 7

Chemical Properties

• CAS DataBase Reference: 1,2-Benzenedicarboxylic acid, 3,6-dimethyl-, dimethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-Benzenedicarboxylic acid, 3,6-dimethyl-, dimethyl ester(37902-49-1)
• EPA Substance Registry System: 1,2-Benzenedicarboxylic acid, 3,6-dimethyl-, dimethyl ester(37902-49-1)

Safety Data

• Hazardous Substances Data: 37902-49-1(Hazardous Substances Data)

Upstream product

• 106-42-3 para-xylene 
• 6832-16-2 methyl diazoacetate 
• 638-02-8 2,5-DIMETHYLTHIOPHENE 
• 762-42-5 dimethyl acetylenedicarboxylate 
• 18063-93-9 dimethyl 1,4-dimethyl-7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate 
• 592-46-1 hexa-2,4-diene 
• 78607-42-8 N,N-dibenzylaminopyrrole 
• 18063-93-9 dimethyl 1,4-dimethyl-7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate 

Downstream Products

• 43183-80-8 3,6-Bis-(brommethyl)-phthalsaeure-dimethylester 
• 58791-51-8 6-Brommethyl-3-dibrommethylphthalsaeure-dimethylester 
• 944-38-7 3,6-dimethylphthalic acid 

Relevant articles and documents

?-Facial Diastereoselectivity in Diels-Alder Reactions of 2,5-Dimethylthiophene Oxide

A series of cycloadditions with 2,5-dimethylthiophene oxide (2), generated in situ by peracid oxidation of 2,5-dimethylthiophene (1), are described.In all cases the syn adduct (with respect to the sulfoxide oxygen) is formed exclusively.

Cycloaddition of thiophene S-oxides to allenes, alkynes and to benzyne

Thiophenes have been treated with alkynes in the presence of m-chloroperoxybenzoic acid to give substituted arenes as cycloadducts. Alternatively, thiophene S-oxides have been prepared by oxidation from thiophenes and have been subjected to cycloaddition with alkynes in a subsequent step. The outcome of the reaction is dependent on the steric demand of the thiophene S-oxide. Some thiophene S-oxides can be reacted at temperatures as high as 140°C without decomposition. Thiophenes as deoxygenated products are the main by-products. Reactions of thiophene S-oxides with allenes give in part thiabicyclo[2.2.1]heptene S-oxides of type 12a and 13 along with aromatized products. Thiophene S-oxides also cycloadd to benzyne.

MOLYBDENUM-PROMOTED REACTIONS OF 7-OXABICYCLOHEPTADIENE AND DERIVATIVES

The reactions of 2,3-bis(methoxycarbonyl)-7-oxabicycloheptadiene (1a) and related compounds 1b, 1c, and 2 with molybdenum carbonyl complexes are examined at two different temperatures.In refluxed cyclohexane, reactions of 1a-c with hexacarbonylmolybdenum produce mainly the corresponding derivatives of dimethyl phthalate (3a-c) and 3,4-bis(methoxycarbonyl)furan (4a-c), while the reaction of 2 produces naphthalene and 1-naphthol.At room temperature, reactions of 1a,b with tris(acetonitrile)tricarbonylmolybdenum yield the dimer ketones 5a,b in addition to 3a,b and 4a,b, while the reaction of 2 produces naphthalene as the only prod uct.The mechanism for the generation 3, 4, and 5 is rationalized as going through complex intermediate with structure of a molybdenum chelated by 1.