Synthesis of tyrosine-derived diphenol monomers

Details Synthesis of tyrosine-derived diphenol monomers Synthesis of tyrosine-derived diphenol monomers

1996-03-29

1997-09-23

Conrad, Joseph

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

560 40, C08G 6300, C07C22900

Patent

active

056706022

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.

REFERENCES:
patent: 5099060 (1992-03-01), Kohn et al.
patent: 5216115 (1993-06-01), Kohn et al.
Bodanszky, Practice of Peptide Synthesis, (Springer-Verlag, New York, 1984) p. 145.

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