Process for preparing highly pure cyclic esters

Details Process for preparing highly pure cyclic esters Process for preparing highly pure cyclic esters

1986-10-29

1988-02-23

Milestone, Norma S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D31912

Patent

active

047271639

ABSTRACT:
A process for making highly pure cyclic esters by heating a copolymer of .alpha.-hydroxy acid or its ester on a thermally stable polyether core.

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patent: 2163268 (1939-06-01), Carothers et al.
patent: 2668162 (1954-02-01), Lowe
patent: 3435008 (1969-03-01), Schmitt et al.
patent: 3442871 (1969-05-01), Schmitt et al.
patent: 3457280 (1969-07-01), Schmitt et al.
patent: 3763190 (1973-10-01), Ross et al.
Translation of Japanese Kokai Patent Publication No. 55-120,581, published Sep. 17, 1980.
J. W. Hill et al., Jour. Am. Chem. Soc., vol. 55 (1933), pp. 5031-5039.
J. W. Hill et al., Jour. Am. Chem. Soc., vol. 55 (1933), pp. 5039-5043.
W. H. Carothers et al., Jour. Am. Chem. Soc., vol. 55 (1933), pp. 5043-5052.

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