1.3- Dithiolium - from 1.3- dithioles, 2-amino

Perchloric acid 1,3-Dithiolium salts from 2-amino-l,3-dithioles... 

Cyanogen chloride has so far been reacted, always with very good yields, with a series of ethane-1,2-diols and ethane-1,2-dithiols, as well as with benzene-1,2-dithiol however, it has not yet been reacted with the simple ethylene-1,2-dithiol, which now offers further preparative possibilities in view of the new syntheses mentioned earlier. Similar 2-amino substituted 1,3-dithiolium derivatives have been synthesized by Sundholm and Smith starting from 2,3-dichloro-... 

Amino-l,2-dithiolium salts are obtained from either / -oxocarbox-amides or ) -oxocarbonitriles by reaction with phosphorus penta-sulfide, followed by addition of perchloric acid (Scheme 6). These cations, which may also be considered as iminium salts, are deprotonated to the corresponding l,2-dithiol-3-imine by ammonia. ... 

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