The reaction of cadmium sulfide with 1,1-dichloro-3,3-difluoro-2-oxo-1-propylthiopropane yields difluorodithiopyruvic propionate. This reacts with morpholine to give difluorodithiopyruvic morpholide; it also undergoes a cycloaddition reaction to the carbon–sulfur double bond with dimethylbutadiene to form 2-difluoroacetyl-4,5-dimethyl-2-propylthio-3H,6H-thiopyran.
Y. G. Shermolovich, V. M. Timoshenko, V. V. Listvan and L. N. Markovsky, Mendeleev Commun., 1998, 8, 245 DOI: 10.1070/MC1998v008n06ABEH000971
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