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Title
Reaction of Sulfene wild Heterocyclic N,N-Disubstituted α-Aminomethylene Ketones IV. Synthesis of 3,4-Dihydro-5 H-[1]benzothiopyratio [3,4- e]-1,2-oxathiin and 2,3,6,7-Tetrahydro-5 H-thiopyrano[3,4- e]-1,2-oxathiin Derivatives.