Process for the production of macrocyclic esters and lactones ut

Details Process for the production of macrocyclic esters and lactones ut Process for the production of macrocyclic esters and lactones ut

1983-06-06

1985-02-12

Milestone, Norma S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549267, C07D31300, C07D31318, C07D32104, C07D32108, C07D32112, C07D32100, C07D32300

Patent

active

044992882

ABSTRACT:
A process is provided for the thermal depolymerization of polyesters to produce macrocyclic compounds utilizing mixed-metal catalysts. Useful mixed-metal catalysts consist of an aluminum alkoxide or aluminum carboxylate with an alkali metal or magnesium alkoxide or carboxylate, or double metal salts thereof. High yields and enhanced rates of reaction are obtained using the mixed-metal catalysts of this invention.

REFERENCES:
patent: 3852309 (1974-12-01), Simmons et al.
patent: 4165321 (1979-08-01), Harris et al.
patent: 4218379 (1980-08-01), Harris et al.
Chemical Abstracts, vol. 56, 11728e; vol. 92, 76570f; vol. 77, 126010m.

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