Dirhodium(II)-Catalyzed C-H Amination Reaction of (S)-3-(tert-Butyldimethylsilyloxy)-2-methylpropyl Carbamate: A Facile Preparation of Optically Active Monoprotected 2-Amino-2-methyl-1,3-propanediol
作者:Takayuki Yakura、Yuya Yoshimoto、Chisaki Ishida
DOI:10.1248/cpb.55.1385
日期:——
Dirhodium(II)-catalyzed C–H amination reaction of (S)-3-(tert-butyldimethylsilyloxy)-2-methylpropyl carbamate, which was easily prepared from methyl (S)-2-methyl-3-hydroxypropanoate, proceeded more smoothly than those of their 2-(methoxycarbonyl)propyl derivative to give the corresponding oxazolidinone in excellent yield. The resulting oxazolidinone was converted efficiently into both (R)-monoprotected and (S)-monoprotected 2-amino-2-methyl-1,3-propanediols.
与 2-(甲氧羰基)丙基衍生物相比,(S)-3-(叔丁基二甲基硅氧基)-2-甲基丙基氨基甲酸酯在 Dirhodium(II)-catalyzed C-H amination 反应中的进展更为顺利。所得到的噁唑烷酮可有效地转化为 (R)- 单保护和 (S)- 单保护的 2-氨基-2-甲基-1,3-丙二醇。