Cyclic derivatives of 1,2,3,4 tetrahydroquinoline and indolene
AssigneePolaroid Corporation
InventorStanley M. Bloom
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Abstract
In one embodiment, the present invention relates to novel heterocyclic compounds as represented in the following formula ##STR1## wherein R and R' each are hydrogen or alkyl, Y is .dbd.O or .dbd.NH and n is a positive integer from 1 to 7. In another embodiment, the present invention is directed to the use of the above-denoted class of heterocyclic compounds as photographic silver halide developing agents and to photographic processes, products and compositions employing the same.
Claims11
A compound of the formula:
- ##STR14## wherein R and R' each are hydrogen or lower alkyl having 1 to 4 carbon atoms, Y is .dbd.O or .dbd.NH and n is a positive integer 1 or 2.
A compound of the formula ##STR15## wherein R and R' each are hydrogen or lower alkyl having 1 to 4 carbon atoms and Y is .dbd.O or .dbd.NH.
The compound having the formula:
- ##STR16##
The compound having the formula:
The compound having the formula:
- ##STR17##
The compound having the formula:
Dependencies are inferred from the claim text.