Patent GB-792045-A (GB)
Title: New sulphur containing compounds
Inventor: STEVENSON HERBERT AUBREY
IPC: C07C317/14
Filed: 1954-02-18
Abstract: Benzyl phenyl sulphones of the formula: <FORM:0792045/IV (b)/1> in which the phenyl radicals X and Y may be unsubstituted or may be substituted with halogen, alkyl or alkoxy of 1-8 carbon atoms, or nitro provided that (1) X and Y are not simultaneously unsubstituted; (2) X may not be substituted with one or more chlorine atoms only when Y is unsubstituted or is substituted with one or more chlorine atoms only or one or more nitro groups only; and (3) X may not be substituted with a single bromine atom when X is unsubstituted; they are prepared by oxidation of benzyl phenyl sulphides with hydrogen peroxide in glacial acetic acid.  These sulphones are ingredients of acaricidal compositions (see Group VI).  The preparation of p-chlorbenzyl p-fluorophenyl sulphone from the corresponding sulphide is described and compounds stated to be capable of being prepared similarly from the corresponding sulphides (for which, see Specifications 713,984, 738,170, 748,604, 758,926 and 790,197), are o- or m-chlorbenzyl p-fluorophenyl sulphone, p-fluorobenzyl p-tolyl or anisyl sulphone, p-fluorophenyl p - methyl - or methoxy - benzyl sulphone, p-bromophenyl p-chloro- or fluorobenzyl sulphone, p-bromobenzyl phenyl or p-tolyl or p-fluoro- or chloro or bromophenyl sulphone, 4-methoxy-3-nitrobenzyl phenyl or 4-chlorphenyl sulphone, p-chlorbenzyl 2-methoxy-4-nitrophenyl or 2-chloro-4-nitrophenyl or p-iodophenyl sulphone, 4-methoxybenzyl 2-methoxy-4-nitrophenyl sulphone, benzyl 2-methoxy-4-nitrophenyl sulphone, 4-chloro-2-nitrophenyl 4 - methoxy - 3 - nitrobenzyl sulphone, p-methylphenyl p-nitrobenzyl sulphone, p-chlorphenyl p-methoxybenzyl sulphone, p-iodobenzyl phenyl or p-chloro, or fluoro, bromo, or iodo-phenyl, or p-tolyl- or anisylsulphone, benzyl - p - iodo - or fluorophenyl sulphone, p-fluorobenzyl, p-iodo- or fluoro- or chlorophenyl sulphone, p-bromo- or methylbenzyl p-iodophenyl sulphone.ALSO:Acaricidal compositions contain as the active ingredient a compound of the formula:  <FORM:0792045/VI/1> in which the phenyl radicals X and Y may be unsubstituted or may contain halogen, alkyl or alkoxy of 1-8 carbon atoms; or nitro groups provided (1) that X and Y may not be unsubstituted simultaneously; (2) that X may not be substituted with one or more chlorine atoms only when Y is unsubstituted or is substituted with one or more chlorine atoms only or one or more nitro groups only; and (3) that X may not be substituted with a single bromine atom when Y is unsubstituted, together with a diluent or carrier.  The compositions may be in the form of dusts, dispersions, or emulsions, and may comprise in addition to the active ingredient: (1) a dispersing and/or suspending agent so that a dispersion is formed on adding the mixture to water; (2) a dispersing and/or suspending agent and a water-miscible organic solvent such as acetone; (3) a dispersing and/or suspending agent, an emulsifying agent, paraffin oil and water; (4) an emulsifying agent and an organic solvent, with or without a wetting agent; (5) a non-volatile oil together with a miscible supplementary solvent; (6) a smoke-generating compound; (7) a dispersing agent and a solid diluent such as kaolin. Specifications 713,984, 738,170, 748,604, 758,926 and 790,197 are referred to.