Several novel 1,3-oxazinane and oxazolidine derivatives were obtained from the corresponding N-benzyl-2-(2-hydroxyethyl)- and N-benzyl-2-(hydroxymethyl)piperidines via electrochemical oxidation. The reactions were carried out in methanol under basic conditions. The yields of the cyclic products were significantly improved using catalytic amounts of iodide ions, which presumably act as effective electron carriers in the two-electron oxidation process.
Electrooxidative Cyclization of Hydroxyamino Compounds Possessing a Benzyl Group
作者:Mitsuhiro Okimoto、Kousuke Ohashi、Haruki Yamamori、Shinnosuke Nishikawa、Masayuki Hoshi、Takashi Yoshida
DOI:10.1055/s-0031-1290755
日期:2012.5
3-oxazinane derivatives using only a small excess of base. Several novel 2-aryl-1,3-oxazinane and 2-aryl-1,3-oxazolidine derivatives were synthesized from N-benzyl-2-piperidineethanols and N-benzyl-2-piperidinemethanols, respectively, by using electrooxidative methods in methanol. For these reactions, the yields of the corresponding cyclized compounds were significantly increased by using catalytic amounts