Thermal rearrangement of 1,4-dithiocyanatobut-2-enes, available by either thiocyanogenation of 1,3-dienes or from 1,4-dihalogenobut-2-enes, affords vicinal thiocanatoisothiocyanates, which are trapped to give thiazolidinones or dihydrothiazoles, or indirectly aminothiols.
E. H. M. A. Elall and J. M. Mellor, J. Chem. Soc., Chem. Commun., 1986, 576 DOI: 10.1039/C39860000576
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