626-84-6Relevant articles and documents
Preparation Method of Dialkylcarbonate using selenite catalyst and Composition Comprising Dialkylcarbonate Prepared Therefrom
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Paragraph 0095-0102; 0116-0120, (2020/05/13)
The present invention relates to a composition which contains: an alkali metal selenite catalyst of chemical formula 2, an alkali metal alkyl selenite catalyst of chemical formula 3, or dialkyl carbonate (DAC) of chemical formula 1, obtained by an oxidation carbonylation process which conducts a reaction of alcohol of chemical formula 4: ROH with a mixed gas of carbon monoxide (CO) and oxygen (O_2); and a selenium-containing by-product, wherein the content of the selenium-containing by-product is 7,000 ppm or less. In addition, the present invention provides a method for manufacturing DAC of the chemical formula 1. The composition according to the present invention can produce DAC of the chemical formula 1 in an economically feasible yield compared to a conventional carbonylation process.COPYRIGHT KIPO 2020
Processes for the preparation of ethers
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, (2008/06/13)
A process for preparing ethers which comprises contacting a carboxylated ether with a metal oxide catalyst under conditions effective to produce the ether.
Nucleophilic Substitutions at Carbonic Acid Derivatives. XIX. Alcoholysis and Hydrolysis of Bis(trichloromethyl)carbonate
Cotarca, Livius,Bacaloglu, Radu,Marcu, Nicolae,Tarnaveanu, Alexandru
, p. 881 - 886 (2007/10/02)
The rate constants of hydrolysis and alcoholysis of bis(trichlormethyl)carbonate in dioxane have been determinated conductometrically.The effects of the water and alcohol concentrations, the temperature and deuterium have been studied.By the hydrolysis and alcoholysis of bis(trichlormethyl)carbonate the nucleophilic attack of water and alcohol is the rate-determining step, followed by a fast elimination of unstable trichloromethanol.