Process for the preparation of polycyclic compounds

Details Process for the preparation of polycyclic compounds Process for the preparation of polycyclic compounds

1996-12-16

1998-11-03

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 89, 544245, C08K 53465, C07D23970

Patent

active

058309314

ABSTRACT:
Process for the preparation of compounds of the general formula (I) ##STR1## by reaction of aromatic dicarboxylic acids of the formula (II) ##STR2## or anhydrides and/or esters thereof with aromatic diamines of the formula (III) ##STR3## wherein A and B have the meaning given in the description, characterized in that the reaction of (II) with (III) is carried out in a reaction medium which comprises water and a hydrotropic compound which has a dielectric constant .epsilon. of 20 to 60 at 25.degree. C.

REFERENCES:
patent: 3819632 (1974-06-01), Burdeska
patent: 3833583 (1974-09-01), Kalz et al.
patent: 4024144 (1977-05-01), Geroll et al.
patent: 4097450 (1978-06-01), Papenfuhs et al.
patent: 4417014 (1983-11-01), Buecheler
patent: 5466805 (1995-11-01), Roschger
patent: 5530130 (1996-06-01), Roschger et al.
Abstract of Belgian Patent 600,302.
Abstract of Japanese Patent 5-321,221.
Abstract of Japanese Patent JP 5-285,218.

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