Dibenzoyl sulfide

The method described is adapted from the procedures of Kym 3 and Engelhardt, Latschinoff, and Malyscheff.4 Thio-benzoic acid has been prepared by the reaction of benzoyl chloride with potassium sulfide,4 hydrogen sulfide in pyridine,6 6 and magnesium bromide hydrosulfide.7 It is formed from dibenzoyl disulfide with potassium hydrosulfide,4 potassium hydroxide,4 8 and ammonia.9 It is also formed from dibenzoyl sulfide, from phenyl benzoate, and from benzoic anhydride with alcoholic potassium hydrosulfide.4 It has been obtained from dibenzoyl sulfide and hydrogen sulfide,10 carbon oxysulfide and phenyl-magnesium bromide,11 12 dibenzyl disulfide and sodium ethoxide,13 benzyl chloride and sulfur in the presence of potassium hydroxide,14 and benzylthiosulfuric acid and alkali.18 16... 

A detailed study of the thermal initiation of S and MMA homopolymerizations with tetraethylthiuram disulfide and with dibenzoyl sulfide in both the presence and absence of light has also been reported. Although the telechelic polymerization yields were poor, block copolymers were obtained in good yields by photochemically initiating the radical polymerizations of various monomers with these a,o)-tetraethylthiuram telechelic polymers. 

The benzoyl chloride-pyridine complex also reacts with hydrogen sulfide at about -20°C to afford an 85% yield of dibenzoyl sulfide (Eq. 5). 

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