Access to Optically Active 3-Azido- and 3-Aminopiperidine Derivatives by Enantioselective Ring Expansion of Prolinols
作者:Anne Cochi、Domingo Gomez Pardo、Janine Cossy
DOI:10.1021/ol201769b
日期:2011.8.19
The activation of N-alkyl prolinols by XtalFluor E allowed the formation of an aziridinium intermediate that can react with tetrabutylammonium azide (nBu4NN3) to produce 3-azidopiperidines and/or 2-(azidomethyl)pyrrolidines, in a ratio up to 100/0. These 3-azidopiperidines can be reduced to the corresponding 3-aminopiperidines.
XtalFluor E活化N-烷基脯氨醇可形成叠氮基中间体,该叠氮基中间体可与叠氮化四丁基铵(n Bu 4 NN 3)反应生成3-叠氮基哌啶和/或2-(叠氮甲基)吡咯烷100/0。这些3-叠氮哌啶可以还原为相应的3-氨基哌啶。