Methyl benzene-1,2-dicarboxylate

Avolin 1,2-benzenedicarboxylate benzenedicarboxylic acid dimethyl ester dimethyl 1,2-benzenedicarboxylate dimethyl benzene-o-dicarboxylate dimethyl benzeneorthodicarboxy-late dimethyl o-phthalate o-dimethyl phthalate DMP Fer-mine Kodaflex DMP methyl benzene-1,2-dicarboxylate Mipax Palatinol M phthalic acid dimethyl ester phthalic acid methyl ester Repeftal Solvanom Solvarone Unimoll DM. 

SYNS 1,4-BENZENE DICARBOXYLIC ACID DIMETHYL ESTER (9CI) DIMETHYL-1,4-BENZENE DICARBOXYLATE METHYL-4-CARBOMETHOXY BENZOATE NCI-C50055 TEREPHTHALIC ACID METHYL ESTER... 

The condensation polymer made by reacting ethylene glycol with 1,4-benzene dicarboxylic acid (terephthalic acid) produces a polymer that is almost exclusively converted into the fiber Dacron. The polymerization is run as an ester interchange reaction using the methyl ester of terephthalic acid ... 

BENZENE DICARBOXYLIC ACID, METHYL ESTER (120-61-6) Combustible solid (286°F/I41°C). The dust or powder forms an explosive mixture with air. Incompatible with strong acids, nitrates, strong oxidizers. Flow or agitation of substance may generate electrostatic charges due to low conductivity, and may cause ignition of flammable vapors or dust. 

On the other hand, the reaction of aryl-phenylfulvenes with maleic anhydride in benzene at 20.6°C seems to exhibit a maximum, although not well pronounced, in the Hammett plot the unsubstituted diphenylfulvene has the highest rate coefficient, while p-Me, p-OMe and p-Cl substituents all decrease the rate . However, in the reaction with methyl acetylene dicarboxylate in heptane at 60-80°C, (p-chlorophenyl)-phenylfulvene was found to be slightly more reactive than diphenylfulvene . It is, in any case, a matter of small differences. 

Methyl Alcohol 67-56-1 MIBK 108-10-1 0-Benzene Dicarboxylic Acid 88-99-3... 

Pyrido[],2-a]pyrimidine-3,7-dicarboxylate 396 was also obtained in the reaction of diazo compound 395 and methyl vinyl ketone in boiling benzene in the presence of a catalytic amount of ruthenium acetate. 

To a mixture of 360 g 50% KOH and 138 ml methanol, add with stirring at -5° 70.5 g dimethyl ester of acetone dicarboxylic acid (dimethyl-beta-ketoglutarate — see method 3 for preparation) and let temperature rise to about 25° over V2 hour. Let stand ten minutes, cool to 0° and add 65 ml ether. Filter, wash precipitate with 65 ml ethanol and 150 ml ether at 0C to get 75 g (III). To 322 ml 1N HCI at 80c, add 41.1 g (I I) and stir twenty minutes cool to 10°, add 211 ml IN HCI, 98.2 g (Ml). 26.4 g Na acetate and 28.2 g methylamine HCI. Stir four hours at room temperature, cool to 10°, and saturate with 410 g KOH. Extract four times with methyl-Cl or benzene (75 ml each, fifteen minutes stirring) and evaporate in vacuum to get the methyl ester of tropan-3-one-2-COOH (IV), which precipitates from the oil (can distill 85/0,2). Test for activity. Dissolve 28.3 g (IV) in 170 ml 10% sulfuric acid cool to -5° and treat with 3.63 kg 1.5% Na-Hg amalgam with vigorous stirring at 0°. See below for easier methods of reducing (IV),... 

Ochiai and Ito reported that the reaction of ethyl acetoacetate and diethyl aminomethylenemalonate (13) in the presence of hydrogen chloride gave 4-hydroxypyridine-3-carboxylate (1314) at room temperature, while in the presence of sodium in boiling benzene, the product was 2-methyl-4-hydroxypyridine-3,5-dicarboxylate (1315) (41CB1111). Aqui et al. proved... 

Most 1,2,3-triazolecarboxylic acids lose carbon dioxide when heated above the melting point. These reactions are often useful for the preparation of simpler triazoles, for example, in the synthesis of 1-vinyl-triazoles by decarboxylation of the corresponding 4-carboxylic acids. 4,5-Dicarboxylic acids normally lose 2 moles of carbon dioxide on heating above the melting point this is so, for example, with the u-triazole and with the 1-benzyltriazole but l-phenyltriazole-4,5-dicarboxylic acid preferentially decarboxylates at the 5-position, giving the 4-carboxylic acid. 6-Methyl-l-phenyl-4-carboxylic acid is reported to be de-carboxylated slowly in boiling benzene. ... 

DMAD, dimethyl 2-methyl-5-phenylfuran-3,4-dicarboxylate (410) is formed. It has t n suggested that the reaction proceeds through the betaine (407), which is transformed into the ylide (408) and so into the furan (410) (Scheme 64). By carrying out the reaction in benzene it was possible to isolate the ylide (408) and thereby substantiate the suggested mechanism. 

Reactions of 4,7-phenanthroline-5,6-dione have been the subject of considerable study. It is reduced to 5,6-dihydroxy-4,7-phenanthroline by Raney nickel hydrogenation226,249 or by aromatic thiols in benzene,262 and oxidized by permanganate to 3,3 -bipyridyl-2,2 -dicarboxylic acid.263 It forms bishemiketals with alcohols226 and diepoxides with diazomethane.226 The diepoxides by reaction with hydrochloric acid form diols of type 57, R = Cl, which on oxidation with lead tetraacetate give 3,3 -bipyridyl diketones of type 58, R = Cl. Methyl ketones of type 58, R = H, are also obtained by lead(IV) acetate oxidation of the diol 57, R = H, obtained by lithium aluminum hydride reduction of 57, R = Cl. With phenyldiazomethane and diphenyldiazomethane the dione forms 1,3-dioxole derivatives,264,265 which readily hydrolyze back to the dione with concomitant formation of benzaldehyde and benzophenone, respectively. 

Abbreviations arene, i/6-benzene or substituted benzene derivative bipy, 2,2 -bipyridyl Bu, Bu", Bu, iso-, n-, or rerf-butyl COD, 1,5-cyclo-octadiene Cp, /5-C5H5 DAD, dimethyl-acetylene dicarboxylate dam, 1,2-bis(diphenylarsino)methane DBA, dibenzylideneacetone DMF, A. A -dimethylformamide dpe, l,2-bis(diphenylphosphino)ethane dpen, os-l,2-bis(di-phenylphosphino)ethylene dpm, 1,2-bis(diphenylphosphino)methane ESR, electron spin resonance F6-acac, hexafluoroacetylacetone FN, fumaronitrile MA, maleic anhydride Me, methyl MLCT, metal ligand charge transfer phen, 1,10-phenanthroline Pr , Pr", iso- or n-propyl py, pyridine RT, room temperature TCNE, tetracyanoethylene tetraphos, (Ph2PCH2CH2)jP THF, tctrahydrofuran Xylyl, 2,6-Me2C6H3. 

Synonyms. DMP Methyl Phthalate. Proprietary Name. Affel Dimethyl benzene-1,2-dicarboxylate CioHio04= 194.2 CAS—131-11-3... 

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