Abstract: The preparation of a developing inhibitor releasing (DIR) compound (see title) wasattempted according to the procedure described in a patent, but the result was not consis-tent with the report. The study of the condensation of 2-bromo-1-phenyl-2-(1-phenyl-1 H-tetrazol-5-yl)thio-ethanone with carboxylate showed that the main product of thereaction is 1-phenyl-2, 2-bis(1-phenyl-1 H-tetrazol-5-yl)thio ethanone instead of theanticipated acyloxy-compound. Eventually, through a new synthetic route, via the conden-sation of 2-acyloxy-2-bromo-1-phenyl-ethanone with the sodium 1-phenyl-1 H-tetra-zolylthiolate, the DIR compound mentioned above was synthesized successfully. Thetotal yield was over 70%.