title: Synthesis and stereoselective functionalization of silylated heterocycles as a new class of formyl anion equivalents.
abstract: The fluoride ion-induced reactivity of a series of silyl heterocycles leads to the generation of nucleophilic species capable of interacting with electrophiles, thus disclosing new classes of formyl and acyl anion synthons. Moreover, when reacting stereodefined molecules, the stereoinformation of the reacting carbon-silicon bond is transferred to the newly formed carbon-carbon bond, suggesting possible applications in stereoselective synthesis. Thus, silyl dithiolanes, oxathiolanes, dioxolanes, thiazolidines and oxazolidines can be efficiently and stereoselectively functionalized under fluoride ion conditions in the presence of electrophiles. While direct access to silyl heterocycles is generally either prevented or troublesome, a novel protocol for their synthesis has also been developed, together with a simple general access route to several functionalized and stereodefined mercaptans, building blocks for the construction of silyl heterocycles.
authors.affiliation: Dipartimento di Chimica Organica and HBL, via della Lastruccia 13, 50019 Sesto Fiorentino, Italy. alessandro.deglinnocenti@unifi.it
authors.forename: Alessandro
authors.initials: A
authors.lastname: Degl'Innocenti
authors.forename: Salvatore
authors.initials: S
authors.lastname: Pollicino
authors.forename: Antonella
authors.initials: A
authors.lastname: Capperucci
mesh_terms: D000838:Anions / Q000138:chemical synthesis / Q000737:chemistry / Q000145:classification; D005459:Fluorides / Q000737:chemistry; D005557:Formaldehyde / Q000737:chemistry*; D015394:Molecular Structure; D017646:Organosilicon Compounds / Q000138:chemical synthesis* / Q000737:chemistry* / Q000145:classification; D013237:Stereoisomerism
chemical_list: D000838:Anions; D017646:Organosilicon Compounds; D005557:Formaldehyde; D005459:Fluorides