Heat development process and color photographic recording material suitable for this process

摘要

Compounds corresponding to formula I are suitable for use as thermal development and diffusion promoting agents for the heat development process. The said compounds enable higher color transfer densities to be obtained and/or the development time to be reduced. <IMAGE> (I) wherein R1, R2 denote alkyl, cycloalkyl, aralkyl, aryl or acyl and Z denotes a group for completing a saturated heterocyclic ring containing 5 to 11 ring members.