Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1990-05-08
1991-06-11
Ivy, C. Warren
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
549518, C07D31900
Patent
active
050233491
ABSTRACT:
A gas-assisted continuous process for the rapid conversion of oligomers of alpha-hydroxycarboxylic acids, esters or salts thereof to cyclic esters in high yields and high states of purity.
REFERENCES:
patent: 4727163 (1988-02-01), Bellis
patent: 4835293 (1989-05-01), Bhatia
E. I. Du Pont de Nemours and Company
Ivy C. Warren
Krukiel Charles E.
Trinh Ba K.
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