Electroinitiated oxygenation of alkenyl sulfides and alkynes in the presence of thiophenol
摘要:
Electrolysis of alkenyl sulfides in the presence of thiophenol with bubbling of molecular oxygen gave the corresponding alpha-(phenylthio) carbonyl compounds with the consumption of a catalytic amount of electricity. An electroinitiated radical chain mechanism has been proposed. The reaction also took place without electrochemical initiation, but much (5-50 times) longer reaction time was required for the completion of the reaction. The potential utility of the present reaction in organic synthesis is demonstrated by the net 1,2-transposition of a phenylthio group and a carbonyl group. The electroinitiated oxygenation of ketene dithioacetals also proceeded smoothly to give the corresponding alpha-(phenylthio) thiol esters. It was also found that the electroinitiated oxygenation of alkynes in the presence of thiophenol gave alpha-(phenylthio) carbonyl compounds. A mechanism involving the initial formation of alkenyl sulfides has been proposed.
Synthesis of vinyl selenides or sulfides and ketene selenoacetals or thioacetals by nickel(II) vinylation of sodium benzeneselenolate or benzenethiolate
作者:H. J. Cristau、B. Chabaud、R. Labaudiniere、H. Christol
DOI:10.1021/jo00356a024
日期:1986.3
Katritzky, Alan R.; Wang, Zuoquan; Henderson, Scott A., Heterocycles, 1998, vol. 48, # 2, p. 295 - 302
作者:Katritzky, Alan R.、Wang, Zuoquan、Henderson, Scott A.
DOI:——
日期:——
Electroinitiated oxygenation of alkenyl sulfides and alkynes in the presence of thiophenol
作者:Junichi Yoshida、Shogo Nakatani、Sachihiko Isoe
DOI:10.1021/jo00070a021
日期:1993.8
Electrolysis of alkenyl sulfides in the presence of thiophenol with bubbling of molecular oxygen gave the corresponding alpha-(phenylthio) carbonyl compounds with the consumption of a catalytic amount of electricity. An electroinitiated radical chain mechanism has been proposed. The reaction also took place without electrochemical initiation, but much (5-50 times) longer reaction time was required for the completion of the reaction. The potential utility of the present reaction in organic synthesis is demonstrated by the net 1,2-transposition of a phenylthio group and a carbonyl group. The electroinitiated oxygenation of ketene dithioacetals also proceeded smoothly to give the corresponding alpha-(phenylthio) thiol esters. It was also found that the electroinitiated oxygenation of alkynes in the presence of thiophenol gave alpha-(phenylthio) carbonyl compounds. A mechanism involving the initial formation of alkenyl sulfides has been proposed.