cas 4525-33-1, DIMETHYL DICARBONATE | Articles data ｜lookchem

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4525-33-1

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METHOD FOR PREPARING DIALKYL DICARBONATES USING AMINE OXIDES
The present invention relates to a method for preparing dialkyl dicarbonates from the corresponding alkyl chloroformates using specific amine oxides as catalysts.
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Paragraph 0044; 0045; 0046; 0047; 0048; 0049; 0050

(2020/01/24)

Process For Preparing Dialkyl Dicarbonates
The novel process for preparing dialkyl dicarbonates by reacting the corresponding alkyl haloformates with alkali metal hydroxides, alkaline earth metal hydroxides and/or carbonates in the presence of water-immiscible organic solvents and in the presence of a catalyst is characterized in that the catalyst used is at least one tertiary alkylamine of the formula (I) [in-line-formulae]NR1R2R3 ??(I), [/in-line-formulae] where the substituents are each as defined in the description.
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Page/Page column 2

(2008/06/13)

METHOD FOR PRODUCING DIALKYL DICARBONATES
The invention relates to a novel method for producing dialkyl dicarbonates by reacting the corresponding halogenated formic acid alkyl esters with alkali or alkaline earth hydroxides and/or carbonates in the presence of water-immiscible organic solvents and in the presence of a catalyst. The invention is characterized in that at least one tertiary alkyl amine of the formula (I), wherein the substituents are defined as in the description, is used as the catalyst.
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Page/Page column 6

(2008/06/13)

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Chemical Properties

Melting Point: 15-17oC
Boiling Point: 171.4 °C at 760 mmHg
Flash Point:80 °C
Density: 1.243 g/cm³
Solubility:35g/l (decomposition)
Storage Temp.:2-8°C
Vapor Pressure: 1.4mmHg at 25°C
Refractive Index: n20/D 1.392(lit.)
Explosive Limit: 3-29.9%(V)
BRN: 956715
PSA: 61.83000
LogP: 0.53580

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