A process of preparing platinum complexes.

摘要

A process is provided for preparing cis-Pt(NH<Sub>3</Sub>)<Sub>2</Sub>CI<Sub>2</Sub> and intermediates. As a step in the process, the intermediate cis-Pt(NH<Sub>3</Sub>)<Sub>2</Sub>l<Sub>2</Sub> is prepared from K<Sub>2</Sub>Ptl<Sub>4</Sub> or Na<Sub>2</Sub>Ptl<Sub>4</Sub> by adding NH<Sub>4</Sub>OH under controlled conditions of temperature and pH. The cis-Pt(NH<Sub>3</Sub>)<Sub>2</Sub>Cl<Sub>2</Sub> is provided in high yield and purity.