The present dissertation deals with new achievements on the fields of hydroformylation and hydroaminomethylation. At first, new Rh(I)-monocarbene catalysts were introduced and their catalytically abilities shown on the model 1,1-Diphenylethen/Piperidin. Futhermore, commercially available catalysts were investigated in order to expand the number of siutable substrates. As consequence, many arylethylenes could be hydroaminomethylated into branched amphetamines derivates under mild conditions. The hydroaminomethylation of fatty olefines with dimethylamine was succsessful as well. Contrary to expectation the hydroaminomethylation with amides as nitrogen source failed. At last, new ligands for the hydroformylation of internal olefines were developed. In addition, the resulting P-substance mixtures were tested as ligands on different monoalkenes, succsessfully.