Science of Synthesis

Argyropoulos, N. G., Science of Synthesis, (2004) 13, 103.

In the original synthesis of 1,4,2-dithiazolium salts[‌5‌] a 1,4,2-dithiazole-5-thione ‌34‌ is heated with an excess of dimethyl sulfate at 80–100°C, followed by treatment of the product with a strong acid. When tetrafluoroboric acid is employed the corresponding 5-(methylsulfanyl)-1,4,2-dithiazolium tetrafluoroborates ‌35‌ are formed in yields that range from 24 to 92%. The starting thiones are available either from thiobenzamides and trichloromethanesulfenyl chloride ‌32‌,[‌5‌] or from 5-piperidino-1,4,2-dithiazolium salts ‌33‌ and hydrogen sulfide (‌Scheme 9‌).[‌10‌,‌14‌]

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References

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• 8.Meeeee-Meee, (8888) M 8e, 88.