发明授权
- 专利标题： Production of hydroxyphenylpropionic acid ester having a novel crystalline structure
- 专利标题（中）： 具有新颖晶体结构的羟基苯基丙酸酯的制备
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申请号： US187640申请日： 1988-04-28
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公开(公告)号： US4845244A公开(公告)日： 1989-07-04
- 发明人: Manji Sasaki , Chinehito Ebina , Haruki Okamura , Shinichi Yachigo , Tamaki Ishii
- 申请人： Manji Sasaki , Chinehito Ebina , Haruki Okamura , Shinichi Yachigo , Tamaki Ishii
- 申请人地址： JPX Osaka
- 专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人地址： JPX Osaka
- 优先权： JPX60-136272 19850621; JPX60-190457 19850829; JPX61-40639 19860226
- 主分类号： C07D493/10
- IPC分类号： C07D493/10
摘要：
3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy]-1,1-dimethylethyl}-2,4,8,10-tetraoxaspiro[5.5] undecane having a novel crystalline structure which, when subjected to Cu-K.sub..alpha. X-ray diffraction, shows sharp X-ray diffraction peaks at angles of diffraction, 2.theta.=4.2.degree. and 2.theta.=10.6.degree.. Also provided is a method for producing this compound, using a certain recrystallization solvent.
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