Synthesis of chiral organotins suitable for the preparation of asymmetric heterogeneous catalysts

A key step in the preparation of asymmetric heterogeneous catalysts based on silica‐supported rhodium and platinum chemically modified with chiral organotins, is the synthesis of optically pure tin derivatives. We report on the synthetic pathways leading to the synthesis of (−)‐menthyltin derivatives without the formation of epimerization by‐products. The physical properties (including full 1 H, 13 C and 119 Sn NMR spectra) of the new compounds,...