Stereoselectivity in asymmetric processes and molecular assemblies

The aim of this thesis was to explore different areas of organic chemistry in which the stereocontrol in the design of chemical processes and/or molecular assemblies is necessary. Therefore, the stereoselectivity in asymmetric organometallic syntheses, in total synthesis of bioactive natural products and in the formation of chiral arrangements due to intramolecular hydrogen bonding networks have been investigated. In particular, three different projects were faced in this thesis. The methodological study of carbolithiation reaction of 1-aryl-1-alkenyl N,N’-diethylcarbamates, also in enantioselective manner, the asymmetric synthesis of natural products with phytotoxic activity and, finally, the synthesis and the NMR analysis of cyclic triureas showing cyclochirality by virtue of cyclic hydrogen-bonding array only. .. [edited by Author]