Methyl phenyl disulphide

Some substituted guanidines have been obtained [457] by reaction of amines with the disulphide H2N(HN )C S S C( NH)NH2. Papers on the structure and p/fa s [458], and the synthesis [458, 459] of acylguanidines have been published. Reaction of guanidine with alkyl-, alkenyl-, and benzyl-halides, followed by distillation under basic conditions, is reported to give useful yields of amines [460]. A novel electrophilic substitution of benzene to give A -methyl-A -phenyl-guanidine amongst other products has been published [461 ]. 

When benenethiol reacts with trimethylsulphoxonium iodide in dimethylformamide at 100°C, phenyl methyl sulphide, diphenyl disulphide and dimethyl sulphide are formed. ... 

Decomposition of this intermediate would lead to dimethyl sulphoxide and phenyl methyl sulphide (equation 43). Diphenyl disulphide should... 

The interaction of 1-methyl-1-thiobenzoylhydrazine (189) and carbon disulphide produces the mesionic 5-phenyl-4-methyl-l,3,4-thiadiazole-2-thione (191), which is convertible by aniline into the mesionic 1,2,4-triazole (192). The condensation of (189) with methyl isothiocyanate also yields... 

Acylation, with phenyl isocyanate, has the same effect of iodination and methylation, one interchain bond becoming unreactive towards the sulphite at pH 7 On the contrary, extensive acetylation and succinylation or removal of the C-terminal residues (DAA insulin) have no apparent effect on the disulphide bonds reactivity as proven by the fact that the corresponding insulin derivatives are split by the sulphite into the constituent chains. 

Electron Diffraction.— Bond-length and bond-angle data have become available for trifluoromethanethiol, phenyl vinyl sulphide, dimethyl disulphide, ethyl methyl disulphide, dimethyl sulphurdi-imide, and benzenesulphonyl chloride. ... 

Pyridine 1-oxide reacts with adamantane-1-thiol in acetic anhydride to give 2- and 3-(l-adamantanethio)pyridines and their tetrahydropyridine analogues. Corresponding butylthio-substituted pyridines are obtained using Bu SH or Bu SH in this reaction in the presence of a chloroformic acid derivative. No complications arise in the use of 3-bromopyridine 1-oxide and KSH for the synthesis of 3,3 -dipyridyl sulphide. 2-Methyl- or 2-phenyl-pyridine is converted into its 5-alkylthio-homologue by reaction of the pyridine-MeLi adduct with a dialkyl disulphide. ... 

Diphenylguanidine was successfully used as starting material for the Willgerodt-Kindler reaction, giving polythioamides. Carbon disulphide reacted with triethylamine and DMF to give A /Z-diethyl- and i W-dimethyl-thioformamide. Under the same conditions, dithiocarbamates decompose to give iViV-dialkyl-thioformamide and sulphur. HMPT and sulphur have been shown to be a useful system for the oxidation of a variety of aromatic and heteroaromatic compounds to the corresponding A -methyl- and JVAT-dimethyl-thioamides in the case of phenyl benzyl ketone, /mn -stilbene and the heterocyclic compounds (114) and (115) have been obtained as by-products. Whereas the benzylic... 

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