title: Ring contraction of 1,2,4,5,7,8-hexaoxa-3-silonanes by selective reduction of COOSi fragments. Synthesis of new silicon-containing rings, 1,3,5,6-tetraoxa-2-silepanes.
abstract: The reducing agents Ph(3)P, (C(8)H(17))(3)P, or NH(2)C(S)NH(2) promote the ring contraction of nine-membered triperoxides, viz., 1,2,4,5,7,8-hexaoxa-3-silonanes, giving rise to seven-membered rings belonging to the previously unknown class of monoperoxides, viz., 1,3,5,6-tetraoxa-2-silepanes, in yields from 67% to 91%. Therefore, the selective reduction of the SiOOC fragments to SiOC in molecules containing simultaneously the COOC fragment was performed for the first time.
authors.affiliation: N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russia. alterex@yandex.ru
authors.forename: Alexander O
authors.initials: AO
authors.lastname: Terent'ev
authors.forename: Maxim M
authors.initials: MM
authors.lastname: Platonov
authors.forename: Anna I
authors.initials: AI
authors.lastname: Tursina
authors.forename: Vladimir V
authors.initials: VV
authors.lastname: Chernyshev
authors.forename: Gennady I
authors.initials: GI
authors.lastname: Nikishin
mesh_terms: D018360:Crystallography, X-Ray; D008958:Models, Molecular; D015394:Molecular Structure; D010084:Oxidation-Reduction; D010545:Peroxides / Q000138:chemical synthesis* / Q000737:chemistry*; D012821:Silanes / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D010545:Peroxides; D012821:Silanes