发明名称 |
Synthesis of tyrosine-derived diphenol monomers |
摘要 |
A method for preparing diphenol compounds, which method includes the steps of coupling a hydroxyphenyl carboxylic acid with a L-tyrosine ester in a water-miscible organic reaction solvent containing a carbodiimide capable of forming a water-soluble urea by-product, thereby forming a diphenol reaction product; and combining the reaction mixture with an amount of water effective to precipitate the diphenol as a water-immiscible organic phase, so that a water-immiscible organic phase is formed containing the diphenol reaction product. New diphenol monomers and polymers polymerized therefrom are also discussed.
|
申请公布号 |
USRE37795(E1) |
申请公布日期 |
2002.07.16 |
申请号 |
US19990358015 |
申请日期 |
1999.07.21 |
申请人 |
KOHN JOACHIM B.;BROCCHINI STEPHEN;SCHWARTZ ARTHUR L. |
发明人 |
KOHN JOACHIM B.;BROCCHINI STEPHEN;SCHWARTZ ARTHUR L. |
分类号 |
C07C231/02;C07C235/34;C08G63/685;C08G64/12;C08G69/44;(IPC1-7):C08G68/00;C07C229/00;C07C233/31 |
主分类号 |
C07C231/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|