Kimberly N Hooper

US Patent:

RE371602, May 1, 2001

Filed:

Jul 21, 1999

Appl. No.:

9/358016

Inventors:

Joachim B. Kohn - Highland Park NJ
Kimberly A. Hooper - Long Valley NJ

Assignee:

Rutgers, The State University - Piscataway NJ

International Classification:

C07C22928
C07C22934

US Classification:

560 40

Abstract:

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-solvent 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 disclosed.

US Patent:

55875076, Dec 24, 1996

Filed:

Mar 31, 1995

Appl. No.:

8/414339

Inventors:

Joachim B. Kohn - Highland Park NJ
Kimberly A. Hooper - Long Valley NJ

Assignee:

Rutgers, The State University - Piscataway NJ

International Classification:

C07C22928
C07C22934

US Classification:

560 40

Abstract:

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 disclosed.