Abstract
Cinnamylacetamides reacted with arylsulfenyl chlorides in chloroform in the absence of LiClO4 affording 5-(arylsulfanyl)-6-phenylpiperidin-2-ones. Their reduction with a system LiAlH4-AlCl3 resulted in 3-(tolylsulfanyl)-1,2-diphenylpiperidine, and with Raney nickel, in 1-aryl-6-phenylpiperidin-2-ones. The latter treated with LiAlH4-AlCl3 were converted into 1-aryl-2-phenyl-piperidines. The oxidation of 5-(arylsulfanyl)-6-phenylpiperidin-2-ones with hydrogen peroxide in acetone led to the formation of 5-sulfinyl-, and with oxone, to 5-sulfonyl derivatives.
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