Lithium Bromide, a Novel and Highly Effective Catalyst for Monothioacetalization of Acetals under Mild Reaction Conditions
作者:Fumiaki Ono、Ryojyu Negoro、Tsuneo Sato
DOI:10.1055/s-2001-17477
日期:——
Lithium bromide is efficient as a catalyst for the monothioacetalization of acetals under mild reaction conditions to provide products in excellent yields with high chemoselectivity.
DEOXYGENATIVE THIOACETALIZATION OF CARBONYL COMPOUNDS WITH ORGANIC DISULFIDE AND TRIBUTYLPHOSPHINE
作者:Masato Tazaki、Makoto Takagi
DOI:10.1246/cl.1979.767
日期:1979.7.5
A new deoxygenative thioether formation from carbonyl compounds as well as epoxides is presented (eq. 1–3). The reaction proceeds with the combined use of alkyl or aryl disulfide and tributylphosphine under neutral and mild conditions. The reaction with aldehydes proceeds with special ease to give thioacetals in high yields, and can be a valuable synthetic reaction.
The Preparation of α-Fluorosulfoxides and Vinyl Fluorides
作者:Suzanne T. Purrington、James H. Pittman
DOI:10.1016/s0040-4039(00)96415-3
日期:1987.1
Treatment of thioacetals with HgF2 in anhydrous acetonitrile, followed by oxidation with MCPBA results in the formation of α-fluorosulfoxides, which can be pyrolyzed to give vinylfluorides.
在无水乙腈中用HgF2处理硫缩醛,然后用MCPBA氧化,形成α-氟亚砜,将其热解生成氟乙烯。
Stereoselective Additions of Chiral <i>(E)-</i>Crotylsilanes to Thionium Ions: Asymmetric Synthesis of Homoallylic Thioethers
作者:Ping Liu、Eva D. Binnun、Jennifer V. Schaus、Nicole M. Valentino、James S. Panek
DOI:10.1021/jo011025z
日期:2002.3.1
well-defined homoallylic thioethers 3 are synthesized via Lewis acid promoted condensation reaction between chiral organosilane reagents 2 and in situ generated thioniumions. The stereochemical course of the reaction is consistent with earlier reports concerning crotylsilations of oxonium ions.