Enantioselective Synthesis of α-Fluorinated β-Amino Acid Derivatives by an Asymmetric Mannich Reaction and Selective Deacylation/Decarboxylation Reactions
作者:Yuanhang Pan、Yujun Zhao、Ting Ma、Yuanyong Yang、Hongjun Liu、Zhiyong Jiang、Choon-Hong Tan
DOI:10.1002/chem.200902830
日期:2010.1.18
degradation: A highly enantio‐ and diastereoselective guanidine‐catalyzed Mannich reaction was developed with α‐fluoro‐β‐keto acyloxazolidinone as the fluorocarbon nucleophile (see scheme). α‐Fluoro‐β‐amino ester and α‐fluoro‐β‐amino ketones with chiral fluorinated carbon were obtained by selective deacylation and decarboxylation reactions, respectively.
有用的降解:用α-氟-β-酮基酰基恶唑烷酮作为氟碳亲核试剂,开发了高度对映体和非对映体的胍催化的曼尼希反应。分别通过选择性脱酰基和脱羧反应获得具有手性氟化碳的α-氟-β-氨基酯和α-氟-β-氨基酮。