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公开(公告)号：US20180179141A1
公开(公告)日：2018-06-28
申请号：US15829008
申请日：2017-12-01
发明人： Michael P. LANCI , Joshua W. ALLEN , Jarid M. METZ , Victor DeFLORIO , Jihad M. DAKKA , Bryan A. PATEL , Michael SALCICCIOLI , Michael W. WEBER , Stephen ZUSHMA
CPC分类号： C07C57/30 , B01J31/04 , C07C25/13 , C07C47/23 , C07C51/16 , C07C51/265 , C07C67/05 , C07C67/08 , C07C63/331 , C07C63/333
摘要： A process for selective oxidation of dimethyl-1,1′-biphenyl(s) to form methyl-1,1′-biphenyl mono-carboxylic acid(s), which can be esterified to form plasticizers, comprising contacting a solution of dimethyl-1,1′-biphenyl(s) in acetic acid in the presence of an oxidation catalyst and air under time and temperature conditions sufficient to oxidize the dimethyl-1,1′-biphenyl(s) into one or more methyl-1,1′-biphenyl mono-carboxylic acid(s) products, conducting at least one of (i) adding an antisolvent, or (ii) optimizing a total conversion of dimethyl-1,1′-biphenyl(s) by oxidation based upon a molar ratio of dimethyl-1,1′-biphenyl isomers, or (iii) precipitating the methyl-1,1′-biphenyl mono-carboxylic acid(s) products by lowering the temperature, or (iv) decreasing the oxidation reaction temperature to enhance conversion of aldehydes over methyl functional groups, so as to limit over-oxidation of the dimethyl-1,1′-biphenyl(s), wherein the oxidation reaction is conducted in the absence of bromide-containing catalysts.
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公开(公告)号：US20180179138A1
公开(公告)日：2018-06-28
申请号：US15829060
申请日：2017-12-01
发明人： Michael P. LANCI , Joshua W. ALLEN , Jarid M. METZ , Victor DeFLORIO , Jihad M. DAKKA , Bryan A. PATEL , Michael SALCICCIOLI , Michael W. WEBER , Stephen ZUSHMA
CPC分类号： C07C57/30 , B01J31/04 , C07C25/13 , C07C47/23 , C07C51/16 , C07C51/265 , C07C67/05 , C07C67/08 , C07C63/331 , C07C63/333
摘要： A process for selective oxidation of dimethyl-1,1′-biphenyl to form methyl-1,1′-biphenyl mono-carboxylic acid(s), comprising contacting a solution of dimethyl-1,1′-biphenyl in acetic acid solvent in the presence of a Co(II) acetate catalyst and air, and optionally adding a co-solvent, or adding sodium or potassium acetate, and oxidizing the dimethyl-1,1′-biphenyl under time and temperature conditions sufficient to form one or more methyl-1,1′-biphenyl mono-carboxylic acid(s). The mono-carboxylic acids are advantageously isolated and esterified to form biphenyl mono-esters for use as plasticizers.
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