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Title
Reaction of sulfene and dichloroketene with open-chain N,N-disubstituted α-aminomethyleneketones. Synthesis of N,N-disubstituted 4-amino-3,4-dihydro-(5-methyl-6-phenyl)(5,6-diphenyl)-1,2-oxathiin 2,2-dioxides and of 4-amino-3-chloro-5-methyl-6-phenyl-2 H-pyran-2-ones