From thioethers

Scheme 10 Generation of sulfonium salts from thioethers.

Polydentate ligands with thiolato and other coordination sites have also been studied but cannot be discussed here in detail (including other S donor atoms from thioether groups as in [Ni2(SCH2CH2SCH2CH2S)2]108 or other N and P donors).91... 

S) can be obtained from thioethers and mercaptans, the heats of formation of some of which have recently been collected by Barrow and Pitzer i these are chiefly old values, probably not accurate to better than 3 kcal. Combining these results with (C-H), (C-G), and (S-H) we obtain (C S)=59 kcal. This fits the results fairly well. Pauling s s value, converted to our heats of atomization, is 58 kcal. 

Varmenot N, Berges J, Abedinzadeh Z, Scemama A, Strzelczak G, Bobrowski K. (2004) Spectral, kinetics, and theoretical studies of sulfur-centered reactive intermediates derived from thioethers containing an acetyl group. J Phys Chem A 108 6331-6346. 

The fact that sulphur dioxide possesses a dipole moment and is triangular in shape lends support to the view that the contribution of the tetravalcnt structure is very small. A direct indication of the existence of the positively charged trivalent state lies in the existence of the sulphonium compounds (RgS) Cl which are formed readily from thioethers and alkyl halides and behave in solution as strong electrolytes containing the (RsS)" ion. 

Mass spectrometry allows differentiation between substitution onto C-5 and C-7 Thus, signal 103 (benzonitrile ion) can be obtained from thioether 19b (5-phenyl) only and not from isomeric 7-phenyl compound 18b (OOMIl). Even prototropic tautomerism of 6-nitro-7-oxo TPs in the gas phase was elucidated (93RJOC525). 

Sulfonic acid amides from thioethers via sulfonic acid chlorides s. 3, 420 SR -y S02NHs... 

The desulfurization of organosulfur compounds with trivalent organophospho-rus compounds has been studied for more than four decades [118]. A variety of such reagents has been used to convert disulfides to monosulfides, trisulfides to disulfides or monosulfides, /3-keto sulfides to ketones, and sulfenimides to amines. They have also been used to remove sulfur from thioethers, thiols, and organometallic dithiocarboxylates, and oxygen from sulfones. 

Equimolar amounts of cyclohexanol and 1-chlorobenzotriazole warmed in methylene chloride until an exothermic reaction starts cyclohexanone. Y 70%. -The above new oxidant, a positive-chlorine compound, is potentially useful because of its easy prepn., stability, reactivity under mild conditions, and easy isolation of the products. F. e. and oxidations s. C. W. Rees and R. C. Storr, Chem. Commun. 1968, 1305 Soc. (C) 1969, 1474 S-oxygenations such as sulfoxides from thioethers s. W. D. Kingsbury and C. R. Johnson, Chem. Commun. 1969, 365. 

Sodium iodide methyl iodide Halides from thioethers s. 24,869... 

Ammonium molybdate hydrogen peroxide Sulfones from thioethers... 

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