TY - JOUR
T1 - Addition of ArSSAr to carbon-carbon multiple bonds using electrochemistry
AU - Fujie, Shunsuke
AU - Matsumoto, Kouichi
AU - Suga, Seiji
AU - Nokami, Toshiki
AU - Yoshida, Jun ichi
N1 - Funding Information:
This work was financially supported in part by a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science . K.M. acknowledges JSPS for financial support.
PY - 2010/4/10
Y1 - 2010/4/10
N2 - ArS(ArSSAr)+ (arylbis(arylthio)sulfonium ions), which were generated and accumulated by the electrochemical oxidation of diaryl disulfides (ArSSAr) in CH2Cl2 at -78 °C, reacted with alkenes to give the corresponding diarylthio-substituted compounds in a stereospecific manner in good yields, when the reaction was quenched with a soft nucleophile, such as allylsilanes, ketene silyl acetals, and triethylamine. A mechanism involving the initial formation of an episulfonium ion followed by ring-opening by the attack of ArSSAr has been suggested. The reactions of ArS(ArSSAr)+ with alkynes also took place to give 1,2-diorganothio-substitued alkenes stereoselectively under similar conditions.
AB - ArS(ArSSAr)+ (arylbis(arylthio)sulfonium ions), which were generated and accumulated by the electrochemical oxidation of diaryl disulfides (ArSSAr) in CH2Cl2 at -78 °C, reacted with alkenes to give the corresponding diarylthio-substituted compounds in a stereospecific manner in good yields, when the reaction was quenched with a soft nucleophile, such as allylsilanes, ketene silyl acetals, and triethylamine. A mechanism involving the initial formation of an episulfonium ion followed by ring-opening by the attack of ArSSAr has been suggested. The reactions of ArS(ArSSAr)+ with alkynes also took place to give 1,2-diorganothio-substitued alkenes stereoselectively under similar conditions.
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U2 - 10.1016/j.tet.2010.02.049
DO - 10.1016/j.tet.2010.02.049
M3 - Article
AN - SCOPUS:77949261533
SN - 0040-4020
VL - 66
SP - 2823
EP - 2829
JO - Tetrahedron
JF - Tetrahedron
IS - 15
ER -