Carbon??13 NMR spectra of some 2??ethylthio??4′??substituted acetophenones and their mono??and di??oxygenated derivatives

PR Olivato, É Bonfada, R Rittner

Index: Olivato, Paulo Roberto; Bonfada, Elida; Rittner, Roberto Magnetic Resonance in Chemistry, 1992 , vol. 30, # 1 p. 81 - 84

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Citation Number: 26

Abstract

Abstract The 13 C NMR signals for some 2-ethylthio-, 2-ethylsulphinyl-and 2-ethylsulphonyl- 4′-substituted acetophenones were assigned. The carbonyl carbons exhibit a progressive upfield shift on going from the ketosulphides to the ketosulphoxides and to the ketosulphones. The α-methylene carbons fro the three classes of compounds are shielded by almost the same amount in relation to the corresponding calculated values. The ...