1-Nitroso-1,2,3,4-tetrahydroquinoline and 1-nitroso-indoline compounds
AssigneePolaroid Corporation
InventorsJames R. Bartles-Keith, Mary T. Burgess, Jean B. Rogers
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Abstract
This invention relates to N-nitroso compounds having the formula ##STR1## wherein R and R' each are selected from hydrogen and alkyl, Z is --CN or --COOR" wherein R" is alkyl and n is a positive integer from 1 to 7. These compounds are useful as intermediates in the preparation of photographic silver halide developing agents.
Claims11
A compound of the formula ##STR16## wherein R and R' each are hydrogen or lower alkyl having 1 to 4 carbon atoms, n is a positive integer 1 or 2 and Z is --CN or --COOR" wherein R" is lower alkyl having 1 to 4 carbon atoms.
A compound of the formula ##STR17## wherein R and R' each are hydrogen or lower alkyl having 1 to 4 carbon atoms and Z is --CN or --COOR" wherein R" is lower alkyl having 1 to 4 carbon atoms.
The compound ##STR18##
The compound
The compound ##STR19##
The compound
Dependencies are inferred from the claim text.