Lactams. XVIII. Oxidation of 1-substituted 3-tert-butylpiperidine with mercuric acetate-EDTA.
作者:TOZO FUJII、TAKASHI HIRAGA、MASASHI OHBA
DOI:10.1248/cpb.29.2691
日期:——
1-(3, 4-Dimethoxyphenyl)-2-(3-tert-butylpiperidino) ethanol (7) was prepared from 3-tert-butylpyridine (5) through the quaternary salt 6. The mercuric acetate-EDTA oxidation of 7 produced the 6-piperidone 10 and the 2-piperidone 13 in a ratio of 98 : 2. The former piperidone was chemically correlated with the known 6-pyridone 8 through the lactam 9, and 9 was converted into the benzoquinolizidine 11 by cyclization and reduction of the resulting iminium salt 12.