Process for the preparation of mixtures of isometric substituted

Details Process for the preparation of mixtures of isometric substituted Process for the preparation of mixtures of isometric substituted

1997-04-23

1998-10-06

Shah, Mukung J.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540122, 428 641, G03G 5006

Patent

active

058178040

ABSTRACT:
Mixtures of isomeric substituted phthalocyanines, and process for their preparation Mixtures of four .alpha.-alkoxy-substituted phthalocyanine isomers, predominantly ##STR1## or of four .beta.-alkoxy-substituted phthalocyanine isomers, where
Me is a divalent metal atom or a divalent oxo metal,
R.sub.1 is a linear or branched C.sub.1 --C.sub.16 alkyl, C.sub.3 --C.sub.16 alkenyl or C.sub.3 --C.sub.16 alkynyl radical which is unsubstituted or substituted by C.sub.1 --C.sub.12 alkoxy, --CN, NO.sub.2, halogen, --OH, phenyl, cyanophenyl, nitrophenyl, halophenyl, hydroxyphenyl or (C.sub.1 --C.sub.12 alkoxy)phenyl,
wherein two isomers of the formula II and of the formula III make up at least 80% of the total mixture and the two other isomers make up at most 20% of the total mixture, with the ratio between the compounds of the formula II and the compounds of the formula III being from 0.3 to 3.0: 1.
The isomer mixtures can be obtained by reacting .alpha.- or .beta.-alkoxyphthalodinitriles in the presence of a metal salt, a Lewis acid, a nitroaromatic compound as solvent and at least equimolar amounts of urea, based on the phthalodinitrile.

REFERENCES:
patent: H477 (1988-06-01), Barger et al.
patent: 3927026 (1975-12-01), Brach et al.
patent: 5220010 (1993-06-01), Oguchi et al.
patent: 5318623 (1994-06-01), Azuma et al.
M. Emmelius et al., Angewandte Chemie 1989/11 pp. 1475-1502.
Nouveau Journal De Chimie, vol. 6, pp. 653-658 (1982).
Derwent Abst. 89-314182/43 of JP-A-01/233,401.
Derwent Abst. 93-02/894/03 of JP-A-04/343,168.

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