Sulfurization of nonenolizable diketones

A Ishii, J Nakayama, MX Ding, N Kotaka…

Index: Ishii, Akihiko; Nakayama, Juzo; Ding, Meng-xin; Kotaka, Noboru; Hoshino, Masamatsu Journal of Organic Chemistry, 1990 , vol. 55, # 8 p. 2421 - 2427

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Citation Number: 31

Abstract

Sulfurization of Diketones with Lawesson's Reagent (LR). The sulfurization of diketones 1 was carried out with excess LR in every case, though one molecule of LR can theoretically sulfurize two carbonyl^.^ The sulfurization of diketone la proceeded easily. Heating la with LR in refluxing benzene for 6 h resulted in the complete consumption of la. Chromatographic workup of the mixture gave disulfide 2 (80%) and trithiolane 3a (13%). The reaction ...