title: Asymmetric intramolecular Diels-Alder reactions of trienals catalyzed by chiral ruthenium Lewis acids.
abstract: Chiral single-point binding ruthenium Lewis acid catalysts [Ru(acetone)((S,S)-BIPHOP-F)(Cp)][SbF6] ((S,S)-1a) and [Ru(acetone)((S,S)-BIPHOP-F)(indenyl)][SbF6] ((S,S)-1b) efficiently catalyze intramolecular Diels-Alder (IMDA) reactions of trienals under mild conditions to afford the endo cycloaddition products as the major products in good yields with high diastereo- and enantioselectivities.
authors.affiliation: University of Geneva, Department of Chemistry, Quai Ernest Ansermet 30, 1211 Geneva 4.
authors.forename: Sirinporn
authors.initials: S
authors.lastname: Thamapipol
authors.forename: E Peter
authors.initials: EP
authors.lastname: Kündig
mesh_terms: D002384:Catalysis; D003500:Cyclization; D007659:Ketones / Q000737:chemistry*; D058116:Lewis Acids; D015394:Molecular Structure; D011090:Polyenes / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D007659:Ketones; D058116:Lewis Acids; D011090:Polyenes; D012428:Ruthenium