| 摘要 |
PURPOSE:To obtain the titled material capable of using a stable reducing agent which is sufficiently proof against an oxidation due to oxygen in the air by incorporating a specific compd. to the titled material. CONSTITUTION:The titled material contains a new compd. shown by the formula. In the formula EAG is a group capable of receiving an electron from a reducing substance, N and O are each nitrogen and oxygen atom, the single bond shown in the formula causes a cleavage after EAG receives the electron, R<1> and R<2> are each a connecting bond or a substituent except hydrogen atom, Time is a group capable of releasing PUG by a following reaction which causes by the cleavage of nitrogen-oxygen single bond shown in the formula as a trigger, PUG is a photographic useful group, (t) is an integer of 0 or 1. The concrete example of EAG is exemplified with an aryl group which is substituted with at least one of electron with drawing groups or a heterocyclic ring which may be substituted, or a quinone residue which may be substituted. |
