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公开(公告)号:US6153696A
公开(公告)日:2000-11-28
申请号:US59861
申请日:1993-05-10
申请人: Gregory Breyta , Daniel Joseph Dawson , Moahmoud Mostafa Khojasteh , Ranee Wai-Ling Kwong , Elwood Herbert Macy , David Paul Merritt , Wayne Martin Moreau , Stanley Eugene Perreault , Harbans Singh Sachdev , Robert Lavin Wood , Hiroshi Ito
发明人: Gregory Breyta , Daniel Joseph Dawson , Moahmoud Mostafa Khojasteh , Ranee Wai-Ling Kwong , Elwood Herbert Macy , David Paul Merritt , Wayne Martin Moreau , Stanley Eugene Perreault , Harbans Singh Sachdev , Robert Lavin Wood , Hiroshi Ito
摘要: A process for the stoichiometric carbonation of a hydroxyaromatic material is provided which comprises the steps of (a) mixing together in a reaction vessel (1) a hydroxyaromatic material, (2) a sufficient amount of a dialkyl dicarbonate to give the desired degree of substitution, (3) a catalytic amount of an unhindered tertiary amine, and (4) a solvent, (b) stirring the reaction mixture, (c) precipitating the alkyl carbonate of the hydroxyaromatic material, and (d) recovering the alkyl carbonate of the hydroxyaromatic material.
摘要翻译: 提供了一种用于羟基芳族化合物的化学计量碳酸化的方法,其包括以下步骤:(a)在反应容器(1)中将羟基芳族化合物混合在一起,(2)足够量的二碳酸二烷基酯以产生所需的取代度 ,(3)催化量的不受阻碍的叔胺,和(4)溶剂,(b)搅拌反应混合物,(c)沉淀羟基芳族物质的碳酸烷基酯,和(d)回收碳酸烷基酯 羟基芳族化合物。