This dissertation reports the synthesis of different non-noble metal complexes for the (asymmetric) reduction of predominantly ketones or esters to the corresponding alcohols. Thereby, mainly pincer ligands coordinated to a manganese(I) metal center were used while corresponding noble metal analogues already have demonstrated good activities in different reductions of organic compounds. Manganese(I) was used as a metal center because of its high abundance, low price and only minor toxicity in comparison to other noble metals.