Process for the continuous preparation of macrocyclic compounds

Details Process for the continuous preparation of macrocyclic compounds Process for the continuous preparation of macrocyclic compounds

1996-03-08

1998-02-10

Owens, Amelia

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D31300

Patent

active

057171114

ABSTRACT:
Process for the preparation of macrocyclic compounds by condensation of at least difunctional compounds and subsequent thermal depolymerization in the presence of catalysts, wherein thermal depolarization is carried out in solvent of the formula ##STR1## where R.sup.1 and R.sup.2 represent identical or different aliphatic C.sub.1-6 hydrocarbon radicals with or without functional groups and having number average molecular weights (Mn) from 500 to 3,000, from which the value of n inevitably follows, at a pressure of less than 50 hPa and at a temperature of 200 to 300.degree. C., 5 to 1,000 parts by weight of solvent being used per part by weight of macrocyclic compound.

REFERENCES:
patent: 2092031 (1937-09-01), Spanagel
patent: 4105672 (1978-08-01), Rueter et al.
patent: 4165321 (1979-08-01), Harris et al.
patent: 4393332 (1983-07-01), Harris
patent: 4709058 (1987-11-01), Cahill, Jr. et al.
patent: 4803288 (1989-02-01), Kitamura et al.
Database WPI Derwent Publications, AN-80-77899cm JP-A-55 120 581, Sep. 18, 1980.

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