Thiophilic ring opening reactions of 3,3-bis(trifluoromethyl)-5-alkoxy-1,2-dithiolanes under action of nucleophiles
作者:Viacheslav Petrov
DOI:10.1016/j.jfluchem.2018.05.004
日期:2018.8
The reaction of 3,3-bis(trifluoromethyl)-5-alkoxy-1,2-dithiolanes (RO= OEt or OBu-n) proceeds through thiophilic attack of BuLi leading to the formation of ring-opened product BuSCH(OR)CH2C(CF3)2SLi, which can be converted into the corresponding thiols or sulfides by the reaction with H+ or alkyl halide. Interaction of 3,3-bis(trifluoromethyl)-5-n-butoxy-1,2-dithiolane with CF3Si(CH3)3 resulted in
Chemo- and stereo-selectivity in oxidation of fluorinated cyclic sulfides by m-chloroperoxybenzoic acid
作者:Viacheslav A. Petrov、Will Marshall
DOI:10.1016/j.jfluchem.2014.10.005
日期:2015.1
Controlled oxidation of various hexafluorothioacetone cycloadducts by m-chloroperoxybenzoicacid (MCPBA) at low temperature led to the formation of the corresponding cyclic sulfoxides in 56–82% yield. The oxidation of 5-ethoxy-3,3-bis(trifluoromethyl)-1,2-dithiolane proceeded selectively leading to trans-5-ethoxy-3,3-bis(trifluoromethyl)-1,2-dithiolane-1-oxide, which underwent selective isomerization
Simple synthesis of 1,1-bis(trifluoromethyl)cyclopropanes
作者:Viacheslav A. Petrov、Will Marshall
DOI:10.1016/j.jfluchem.2011.06.022
日期:2012.1
A new, simple synthesis of 1,1-bis(trifluoromethyl)cyclopropanes has been discovered. It is based on the reaction of readily available 2,2-bis(trifluoromethyl)thietanes with tertiary phosphines in a polar solvent, which leads to an unusual desulfurization process, resulting in the formation of 1,1-bis(trifluoromethyl)-2-alkoxy cyclopropanes. The process of the corresponding thietanes appears to be
Remarkable effect of metal fluoride catalyst on reaction of hexafluoropropene, sulfur and vinyl ethers. Convenient synthesis of 2,2-bis(trifluoromethyl)-4-R-thietanes, 3,3-bis(trifluoromethyl)-5-R-1,2-dithiolanes and 2,2-bis(trifluoromethyl)-4-R-1,3-dithiolanes
作者:Viacheslav A. Petrov、Will Marshall
DOI:10.1016/j.jfluchem.2010.06.011
日期:2010.11
It was demonstrated that the outcome of the reaction of hexafluoropropene, sulfur and vinyl ether strongly depends on the catalyst and reaction conditions. The reaction of HFP and Sx leading to the formation of 2,2,4,4-tetrakis(trifluoromethyl)-1,3-dithietane (1) when it is catalyzed by CsF, proceeds under milder conditions and is easier to control compared to KF catalyzed process. The order of addition