Organic synthesis : general remarks. -- Stereoelectronic effects and reactivity. -- The stability of organic compounds. -- Aliphatic nucleophilic substitutions : problematic electrophiles. -- The alkylation of carbanions. -- The alkylation of heteroatoms. -- The acylation of heteroatoms. -- Palladium-catalyzed C-C bond formation. -- Cyclizations. -- Monofunctionalization of symmetric difunctional substrates.