发明公开
- 专利标题: Method of esterifying dihydroxybenzenes
- 专利标题(中): 二羟基苯甲酮的方法
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申请号: EP87306009.9申请日: 1987-07-08
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公开(公告)号: EP0252724A3公开(公告)日: 1989-08-23
- 发明人: Fong, Ronald A. , Rowland, Richard R.
- 申请人: The Clorox Company
- 申请人地址: 1221 Broadway Oakland California 94612 US
- 专利权人: The Clorox Company
- 当前专利权人: The Clorox Company
- 当前专利权人地址: 1221 Broadway Oakland California 94612 US
- 代理机构: Smith, Sydney
- 优先权: US883626 19860709
- 主分类号: C07C69/28
- IPC分类号: C07C69/28 ; C07C67/08 ; C07C69/90 ; C07C69/63
摘要:
The present invention provides a method of esterifying dihydroxybenzene starting materials to synthesize unsymmetrical diesters in high yield. Many of the resultant unsymmetrical diesters are useful in dry bleaching compositions. The method can be practiced by selectively monoacylating a dihydroxybenzene starting material with an acid anhydride to form an intermediate monoester having the structure
which is then acylated to form a diester reaction product hav- ing the structure
wherein R 1 is greater than R 3 (and both R, and R 3 are alkyl groups) and X is a substituent group which does not participate In the esterification (or which can have a protecting group thereon).
which is then acylated to form a diester reaction product hav- ing the structure
wherein R 1 is greater than R 3 (and both R, and R 3 are alkyl groups) and X is a substituent group which does not participate In the esterification (or which can have a protecting group thereon).
公开/授权文献
- EP0252724B1 Method of esterifying dihydroxybenzenes 公开/授权日:1992-12-30
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