Abstract
The structure of the product of the Asinger reaction of acetophenone with n-butylamine and elemental sulfur is still under debate. Two products have been proposed: a hexathiocanthione containing a C2S6 ring with an exocyclic thione and a heptathiocane containing a CS7 ring. A single crystal X-ray study has shown that the heptathiocane structure is cor- rect. 1 H and 13 C NMR investigations in solution confirm that the structure is maintained in solution and that there is no evidence for the imine tautomer.
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