17755-33-8Relevant academic research and scientific papers
Rearrangements and decompositions of thiobisphenols
Neale,Bain,Rawlings
, p. 4583 - 4591 (1969)
2,2′-, 2,4′- and 4,4′-Monothiobisphenol separately rearrange in phenol at 180° in the presence of sodium hydroxide to give similar mixtures containing only 2,2′-, 2,4′- and 4,4′-monothiobisphenol in the approximate ratio, 45:45:10. The rearrangements appear to be intermolecular and they are interpreted in terms of polar processes which lead initially to the formation of o- and p-monothiobenzoquinones. 2,2′-Dithiobisphenol, 4,4′-dithiobisphenol and 4,4′-trithiobisphenol under similar conditions are desulphurated with the evolution of hydrogen sulphide also to give mixtures containing only 2,2 - 2,4′- and 4,4′-monothiobisphenol whilst 3,3′-dithiobisphenol is stable in alkaline phenol even after long periods at 180°. Similar initial heterolyses to o- and p-monothiobenzoquinones are suggested as sources of the monothiobisphenols and displacements of sulphide- or hydrosulphide-ions from intermediate benzeneperthiolate ions by carbanions derived from phenol are suggested as sources of the hydrogen sulphide.
O,O,O',O'-Tetramethyl O,O'-trithiodi-p-phenylene ester
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, (2008/06/13)
This invention relates to phosphorothioic acid, O,O,O',O'-tetramethyl O,O'-trithiodi-p-phenylene ester and its use in controlling insects and acarina in warm-blooded animals.
