There is disclosed a coupler for photography of the formula (I):
wherein R₁ and Y each represent a hydrogen atom or a substituent; R₂ represents a substituent; n represents an integer of 0 to 4, and when n is 2 or more, plural number of R₂'s may be the same or different; X represents a hydrogen atom or a substituent which is eliminated by the reaction with the oxidized product of a color developing agent.
本发明公开了一种式(I)的摄影用耦合剂:
其中,R₁ 和 Y 分别代表氢原子或取代基;R₂ 代表取代基;n 代表 0 至 4 的整数,当 n 为 2 或 2 以上时,R₂ 的复数可以相同或不同;X 代表氢原子或取代基,通过与
显色剂的氧化产物反应而消除。