Synthesis of cis‐diamino‐[1,1‐[1‐14C]cyclobutanedicarbonyloxy (2)‐0,0] platinum II

Abstract

AbstractThe synthesis of the title compound (4) is described. [2‐14C]Diethyl malonate was treated simultaneously with a freshly prepared solution of sodium ethoxide and 1,3‐dibromopropane to give 1 1‐[1‐14C]cyclobutanedicarboxylic acid diethyl ester (1). Treatment with potassium hydroxide saponified the ester leaving the dipotassium salt (2). Conversion of potassium tetrachloroplatinate II with potassium iodide followed by ammonium hydroxide resulted in cis‐diamino‐diiodoplatinum II1 (3). Reaction of (3) with 1,1‐[1‐14C]cyclobutanedicarboxylic acid dipotassium salt in the pressence of silver nitrate resulted in the title compound (4).