| 摘要 |
A process is disclosed for the preparation of 1H-pyrazo [1,5-b][1,2,4]triazole magenta couplers represented by formula (I): <IMAGE> (I) wherein R, R1, R2, R3, R4, R5 each independently represents a hydrogen or a substituted or unsubstituted alkyl group, provided that R1 and R2 are not simultaneously a hydrogen atom; R6 represents a substituted alkyl, aryl, alkoxy, aryloxy or other organic functional group; L represents a substituted or unsubstituted alkylene; m is an integer greater than zero; n, y, and z each represents an integer of zero to five; and X is a coupling off group. The process comprises employing a nitrile compound of formula (II): <IMAGE> (II) as an intermediate to obtain the compounds of formula (I).
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