Electrophilic intramolecular cyclization of functional dervatives of unsaturated compounds: VII. Synthesis of 5-arylsulfanyl-6-phenylpiperidin-2-ones in the absence of salt additives and their selective reduction and oxidation
作者:N. M. Tsizorik、A. I. Vas’kevich、R. I. Vas’kevich、M. V. Vovk
DOI:10.1134/s1070428015020165
日期:2015.2
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.