Benzo-1,4-quinones

Details Benzo-1,4-quinones Benzo-1,4-quinones

1983-04-28

1986-08-26

Hollrah, Glennon H.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

544111, 544173, 546189, 546226, 548524, 548571, 549414, 549415, 549420, 549426, 549427, 549472, 549473, 549475, 549480, 549493, 549501, 260396R, 260396N, C07C 5000, C07D26532, C07D41300

Patent

active

046084355

ABSTRACT:
New benzo-1,4-quinones and salts thereof with organic or inorganic acid and bases have the formula I ##STR1## wherein p is 1 or 2 and q is 0 or 1, provided that p+q is 1 or 2, R is a residue of formula II ##STR2## wherein Q is selected from the residues --CO.sub.2 R.sub.4, --CON(R.sub.4)(R.sub.5), --OR.sub.5, --OCOR.sub.7, --N(R.sub.8)(R.sub.9), --PO(OR.sub.10)([O].sub.x R.sub.11), --SO.sub.2 R.sub.12, --CN, Halogen, --NO.sub.2 or --COR.sub.13, n is an integer from 1 to 20, k is 1 or 2 and x is 0 or 1, and R.sub.1 to R.sub.5 and R.sub.7 to R.sub.13 are as defined in the specification.
The compounds of formula I are useful in photographic materials such as bleaching inhibitors in films of photographic silver dye bleach materials.

REFERENCES:
patent: 2927932 (1960-03-01), Preston
patent: 3957836 (1976-05-01), Morimoto et al.
patent: 4086253 (1978-04-01), Hopper et al.
patent: 4484000 (1984-11-01), Howell
Morrison & Boyd, Organic Chemistry, 1974, p. 878.
Abrahart, Dyes and Their Intermediates, 1968, 7-9.

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