title: Super silyl stereo-directing groups for complete 1,5-syn and -anti stereoselectivities in the aldol reactions of beta-siloxy methyl ketones with aldehydes.
abstract: In this communication, we report that substrate-controlled 1,5-syn and -anti stereoinduction in the aldol reaction of beta-tris(trialkylsilyl)siloxy methyl ketones can be achieved with high diastereoselectivities. Tris(trialkylsilyl)silyl groups are easily prepared and play an important role in the selectivities of these reactions. Furthermore, all of the 1,3,5-triol stereoisomers can easily be prepared from beta-siloxy methyl ketones in no more than three steps.
authors.affiliation: Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, USA.
authors.forename: Yousuke
authors.initials: Y
authors.lastname: Yamaoka
authors.forename: Hisashi
authors.initials: H
authors.lastname: Yamamoto
mesh_terms: D000447:Aldehydes; D018942:Macrolides / Q000138:chemical synthesis*; D019906:Nuclear Magnetic Resonance, Biomolecular; D013237:Stereoisomerism; D014297:Trimethylsilyl Compounds / Q000737:chemistry*
chemical_list: D000447:Aldehydes; D018942:Macrolides; D014297:Trimethylsilyl Compounds