发明授权
- 专利标题： Process for preparing chlorinated diphenyl ethers
- 专利标题（中）： 氯化二苯醚的制备方法
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申请号： US46594申请日： 1987-05-04
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公开(公告)号： US4766253A公开(公告)日： 1988-08-23
- 发明人: Peter Rauber
- 申请人： Peter Rauber
- 申请人地址： NY Ardsley
- 专利权人： Ciba-Geigy Corporation
- 当前专利权人： Ciba-Geigy Corporation
- 当前专利权人地址： NY Ardsley
- 主分类号： B01J31/02
- IPC分类号： B01J31/02 ; C07B61/00 ; C07C41/00 ; C07C41/01 ; C07C41/16 ; C07C43/29 ; C07C67/00 ; C07C43/275
摘要：
The invention relates to a novel process for preparing chlorodiphenyl ethers of the formula I ##STR1## in which R is hydrogen or chlorine, which comprises heating a material of the formula III ##STR2## in which X is one equivalent of an alkali metal or alkaline earth metal ion and R is as defined above, in an excess of a dichlorobenzene of the formula II ##STR3## in the presence of a copper catalyst and of an aprotic solvent as cocatalyst at temperatures of 120.degree.-220.degree. C.