| 摘要 |
The invention provides new magenta-dye-forming couplers, new magenta dyes formed therefrom, and new photographic elements containing the new couplers. The new couplers have the structure (I): <IMAGE> (I) wherein <IMAGE> has the structure (II) <IMAGE> (II) wherein each -R- is independently a substituted or unsubstituted alkylene, alkoxylene, arylene, or aryloxylene group, and each -L- is independently a substituted or unsubstituted alkylene, alkoxylene, arylene, aryloxylene, or aryloxyalkylene group, and Q- has the structure (III):ntly H- or a substituent; each X- is independently H- or a coupling-off group; and each of D, E, and Z is independently a substituted or unsubstituted methine group, =N-, or -NH-, with the provisos that one of either the D-E or the E-Z bonds is a double bond and the other is a single bond, and when the D-E bond is a carbon-carbon double bond it may form part of an aromatic ring fused with Q-, and one of D, E, and Z is a methine group bonded to <IMAGE>
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