90051-95-9Relevant academic research and scientific papers
Benzo-1,4-quinones
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, (2008/06/13)
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 --CO2 R4, --CON(R4)(R5), --OR5, --OCOR7, --N(R8)(R9), --PO(OR10)([O]x R11), --SO2 R12, --CN, Halogen, --NO2 or --COR13, n is an integer from 1 to 20, k is 1 or 2 and x is 0 or 1, and R1 to R5 and R7 to R13 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.
