Highly Enantioselective Catalytic Dynamic Resolution of <i>N</i>-Boc-2-lithiopiperidine: Synthesis of (<i>R</i>)-(+)-<i>N-</i>Boc-Pipecolic Acid, (<i>S</i>)-(−)-Coniine, (<i>S</i>)-(+)-Pelletierine, (+)-β-Conhydrine, and (<i>S</i>)-(−)-Ropivacaine and Formal Synthesis of (−)-Lasubine II and (+)-Cermizine C
作者:Timothy K. Beng、Robert E. Gawley
DOI:10.1021/ja105772z
日期:2010.9.8
syntheses of both enantiomers of 2-substituted piperidines using a wide range of electrophiles. The CDR has been applied to the synthesis of (R)- and (S)-pipecolic acid derivatives, (+)-beta-conhydrine, (S)-(+)-pelletierine, and (S)-(-)-ropivacaine and the formal synthesis of (-)-lasubine II and (+)-cermizine C.
在 TMEDA 存在下,使用手性配体 8 或其非对映异构体 9 的 rac-2-锂硫-N-Boc-哌啶催化动态拆分 (CDR) 导致使用广泛的 2-取代哌啶的两种对映体的高度对映选择性合成亲电试剂的范围。CDR 已应用于 (R)- 和 (S)-哌啶酸衍生物、(+)-β-conhydrine、(S)-(+)-pelletierine 和 (S)-(-)-ropivacaine 的合成(-)-lasubine II 和 (+)-cermizine C 的正式合成。