Titanocene(II)-Promoted Olefination of ω,ω-Bis(phenylthio)alkyl Alkanoates. A New Method for the Preparation of ω-Hydroxy Ketones
摘要:
Intramolecular olefination of esters having a thioacetal moiety was studied. The treatment of omega,omega-bis(phenylthio)alkyl alkanoates with Cp2Ti[P(OEt)(3)](2) and the following hydrolysis gave omega-hydroxy ketones in good yields. (C) 2000 Elsevier Science Ltd. All rights reserved.
Titanocene(II)-Promoted Olefination of ω,ω-Bis(phenylthio)alkyl Alkanoates. A New Method for the Preparation of ω-Hydroxy Ketones
摘要:
Intramolecular olefination of esters having a thioacetal moiety was studied. The treatment of omega,omega-bis(phenylthio)alkyl alkanoates with Cp2Ti[P(OEt)(3)](2) and the following hydrolysis gave omega-hydroxy ketones in good yields. (C) 2000 Elsevier Science Ltd. All rights reserved.
Catalyst-Dependent Selective Synthesis of O/S- and S/S-Acetals from Enol Ethers
作者:Antonio L. Braga、Claudio C. Silveira、Luciano Dornelles、Gilson Zeni、Flavia A. D. Galarza、Ludger A. Wessjohann
DOI:10.1080/00397919508015466
日期:1995.10
Abstract Enol ethers are reacted with mercaptanes to give the corresponding O/S- or S/S-acetals in medium to high yield. Either product can be formed selectively depending on the acid catalyst and the reaction time applied.
Carbenoid anion behavior of dilithio derivatives of thioacetal alcohols. Stereochemistry and mechanism of ring closures by oxyanion-facilitated carbon-hydrogen bond insertion
作者:Robert H. Ritter、Theodore. Cohen
DOI:10.1021/ja00273a028
日期:1986.6
RITTER R. H.; COHEN T., J. AMER. CHEM. SOC., 108,(1986) N 13, 3718-3725