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Dimethyl oxalate can be converted into ethylene glycol in high yields (94.7%) [10] [11] The methanol formed is recycled in the process of oxidative carbonylation. [12] Other plants with a total annual capacity of more than 1 million tons of ethylene glycol per year are planned. Decarbonylation gives dimethyl carbonate. [13]
Synthesis of acrylic acid using "Reppe chemistry"; a metal catalyst is required. The carbomethoxylation of ethylene to give methyl propionate: C 2 H 4 + CO + MeOH → MeO 2 CC 2 H 5. Methyl propionate ester is a precursor to methyl methacrylate. [10] Hydroesterification is like hydrocarboxylation, but it uses alcohols in place of water. [11]
Oxalate (systematic IUPAC name: ethanedioate) is an anion with the chemical formula C 2 O 2− 4. This dianion is colorless. It occurs naturally, including in some foods. It forms a variety of salts, for example sodium oxalate (Na 2 C 2 O 4), and several esters such as dimethyl oxalate ((CH 3) 2 C 2 O 4). It is a conjugate base of oxalic acid.
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Ytterbium(III) oxalate is the oxalate of ytterbium, with the chemical formula Yb 2 ... (III) chloride and a benzene solution of dimethyl oxalate. [1] Properties
Diphenyl oxalate (trademark name Cyalume) is a solid whose oxidation products are responsible for the chemiluminescence in a glowstick. This chemical is the double ester of phenol with oxalic acid. Upon reaction with hydrogen peroxide, 1,2-dioxetanedione is formed, along with release of the two phenols. [2]
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The process involves copper-catalyzed reactions of alkyl halides with elemental silicon, which take place in a fluidized bed reactor. Although theoretically possible with any alkyl halide, the best results in terms of selectivity and yield occur with chloromethane (CH 3 Cl). Typical conditions are 300 °C and 2–5 bar. These conditions allow ...