The need to develop effective methods for enantioselective synthesis is becoming ever more important as only a single enantiomer of a racemic bioactive compound is generally required for pharmaceuticals, agrochemicals, flavour or fragrance. Homogeneous asymmetric catalysis has been used to perform a variety of transformations under mild conditions with high enantioselectivity. As these fine and specialty chemicals are manufactured to meet high and well defined standards of purity compatible with the desired performance, chemical industry had to adopt efficient and clean technology. This book discusses the contribution of soluble polymer-supported ligands and insoluble polymer-supported ligands to asymmetric catalysis in the field of reduction.