Radical Cation Cycloadditions Using Cleavable Redox Auxiliaries
作者:Shishi Lin、Shane D. Lies、Christopher S. Gravatt、Tehshik P. Yoon
DOI:10.1021/acs.orglett.6b03545
日期:2017.1.20
The incorporation of an easily oxidized arylsulfide moiety facilitates the photocatalytic generation of alkene radical cations that undergo a variety of cycloadditionreactions with electron-richreaction partners. The sulfide moiety can subsequently be reductively cleaved in a traceless fashion, affording products that are not otherwise directly accessible using photoredox catalysis. This approach
The treatment of carbonyl compounds with the organotitanium species formed from methoxybis(phenylthio)methane and low valent titanium species Cp2Ti[P(OEt)3]2 gave 1-alkenyl ethers in good yields. 1-Alkenyl sulfides were also obtained by the similar reaction using triphenyl trithioorthoformate. These reactions were successfully applied to carboxylic esters and thiolesters to produce 1,2-diheteroatom
用由甲氧基双(苯硫基)甲烷形成的有机钛物种和低价钛物种Cp 2 Ti [P(OEt)3 ] 2处理羰基化合物,可得到高产率的1-烯基醚。使用三苯基原硫代三甲酸酯通过类似的反应也获得了1-烯基硫化物。这些反应已成功地应用于羧酸酯和硫酯,以生产1,2-二杂原子取代的1-烯烃。
Regiospecific conversion of alkenyl sulphides to α-sulphenylated carbonyl compounds by oxygenation in the presence of thiophenol
作者:Jun-ichi Yoshida、Shogo Nakatani、Sachihiko Isoe
DOI:10.1039/c39880001468
日期:——
Regiospecificconversion of alkenyl sulphides to α-sulphenylated carbonylcompounds was achieved by oxygenation in the presence of thiophenol; electrolysis was found to be quite effective for initiation of the reaction.
TITANIUM TETRACHLORIDE PROMOTED REDUCTION OF ALKENYL SULFIDES USING TRIETHYLSILANE AS A REDUCING AGENT
作者:Takeshi Takeda、Toshio Tsuchida、Tooru Fujiwara
DOI:10.1246/cl.1984.1219
日期:1984.7.5
Alkenyl sulfides were reduced to the corresponding alkyl sulfides with triethylsilane in the presence of titanium tetrachloride in good yields. The reduction proceeds via -phenylthioalkyltitanium i...
An efficient deoxygenation of 1-alkenyl or alkyl phenyl sulfoxides to the corresponding sulfides mediated by magnesium in alcohol
作者:Ge Hyeong Lee、Eun Bok Choi、Eun Lee、Chwang Siek Pak
DOI:10.1016/s0040-4039(00)76794-3
日期:1994.4
An extremely convenient deoxygenation of 1-alkenyl, alkyl, and aryl phenyl sulfoxides with magnesium powder in absolute methanol (or ethanol) afforded the corresponding sulfides in excellent yields.