StereoisomerismCyclizationAlkenesAcetalsAminationLewis AcidsIminesMolecular StructureKetonesAlkadienesIridiumRhodiumCombinatorial Chemistry TechniquesCatalysisPalladiumSilanesAldehydesAllyl CompoundsBoranesSiloxanesAlcoholsAlkynesSpiro CompoundsFuransEstersAminesAlkylationMolecular ConformationOrganometallic CompoundsCyclopentanesMagnetic Resonance SpectroscopyModels, Molecular