Dithiocarbamic acid disulphides

I II X = O or S within the molecule as a structural element, e.g. dithiocarbamic acid disulphides such... 

Half-life. Plasma half-life, disulfiram about 7 hours, diethyl-dithiocarbamic acid about 15 hours, carbon disulphide about 9 hours. 

Dimethyl-dithiocarbamic Acid.—According to Schall the electrolysis of the potassium salt of dimethyl-dithiocarbamic acid resulted in the formation of tetra-ethyl-thiuram disulphide,... 

Carbamates comprise the esters and the salts of carbamic acids. This is a systematic classification from chemical aspects. Microbicides of this class of substances widely differ in terms of both efficacy and mechanisms of activity. The carbamic and dithiocarbamic acids, the basis of the carbamates, lack chemical stability they occur only intermediarily and disintegrate instantly to form carbon dioxide (CO2), carbon disulphide (CS2) and amine (see Fig. 31). 

This [25] is an alternative method for determining the sum of primary and secondary amines, without distinguishing between them. The primary and secondary amines are converted to alkyl dithiocarbamic acids by reaction with carbon disulphide ... 

Primary and secondary amines yield dithiocarbamic acids with carbon disulphide (equations 40 and 41). 

A more specific titration method than either of the above is based upon formation of a dithiocarbamic acid. The method given below follows that of Critchfield and Johnson for the titration of secondary aliphatic amines, but results may vary within a range of about 0-5 per cent. The precipitate which forms on addition of the carbon disulphide dissolves as the titration proceeds ... 

N-Thiocarbonyl alkyl esters of amino acids were chromatographed by Halpern et al. [286]. Their preparation proceeds according to Scheme 5.29. The reaction sequence includes esterification of amino acids followed by reaction with carbon disulphide and triethylamine, giving rise to dithiocarbamate. Reaction of the latter with chloroformate... 

Thienothiophens, Thienoselenophens, and Related Systems.—The thiophen derivative (738) cyclises to the thieno[2,3- >]tiiiophen (739)/ Electrochemical reduction of carbon disulphide in acetonitrile gives the di-anion (740), which forms the dithiolodithiole (741) on treatment with thiophosgene. The di(acylimino)tetrathiapentalenes (742) are obtained by the action of acid chlorides RCOCl on the complex of sodium cyanodithioformate with Perchloric acid transforms the bis-dithiocarbamate (743 R2N = piperidine) into the salt (744) the tetraselenium analogue has been prepared similarly/ ... 

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