Benzo-1,4-quinones

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

C - Chemistry, Metallurgy

07

C

260/385, 260/396

C07C 69/16 (2006.01) C07C 46/06 (2006.01) C07C 50/28 (2006.01) C07C 51/16 (2006.01) C07C 51/29 (2006.01) C07C 59/52 (2006.01) C07C 66/00 (2006.01) C07C 69/95 (2006.01) C07F 9/40 (2006.01) G03C 7/28 (2006.01)

Patent

CA 1235134

ABSTRACT OF THE DISCLOSURE New benzo-1,4-quinones New benzo-1,4-quinones and salts thereof with organic or inorganic acid and bases have the formula I Image (I) 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 Image (II) , wherein Q is selected from the residues -CO2R4, -CON(R4)(R5), -OR5, -OCOR7, -N(R8)(R9), -PO(OR10)([O]xR11), -SO2R12, -CN, Halogen, -NO2 or COR13, n is an interger from 1 to 20, k is 1 or 2 and x is 0 or 1, and R1 to R5 and R7 to R13 have the significance as given in claim 1. The compounds of formula I are useful in photographic materials such as bleaching inhibitors in films of photographic silver dye bleach materials.

427271

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