中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 1-[2-(2-Methylpiperidino)phenyl]ethanol | 395644-02-7 | C14H21NO | 219.327 |
The title compound was prepared by Hg(II)-edta dehydrogenation of the aminoalkohol 2 via the benzoxazine 4, which reacted with methylmagnesiumiodide to 6. This compound shows in the NMR spectrum atropisomerism for the restricted rotation of the piperidine moiety about the aryl-C-N bond. The dehydrogenation of 6 stopped after a two electron withdrawal generating the benzoxazine 7, because the angular hydrogen atom occupies an equatorial position, which prevents stereoelectronic conditions for a further oxidation.