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The title compounds were prepared via the intramolecular condensation reaction of 12-[α-(p-chlorophenylsulfinyl)acetoxy]tridecanal(or dodecanal) or via the combination of inter- and intramolecular condensation of 5-[α-(p-chlorophenylsulfinyl)acetoxy]hexanal in the presence of piperidine.
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Nokami et al. (1994) studied this question.
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