Copper ion-catalyzed regioselective introduction of active methylene groups into the γ-position of piperidine skeleton and its application to the synthesis of (−)-cincholoiponic acid
摘要:
Copper ion-catalyzed regioselective introduction of active methylene groups into the gamma-position of piperidine skeleton was exploited. In the case of using chiral ligand as an additive, this reaction proceeded with moderate enantioselectivities. This method was applied to the synthesis of (-)-cincholoiponic acid from N-methoxycarbonylpiperidine. (c) 2006 Elsevier Ltd. All rights reserved.
Copper ion-catalyzed regioselective introduction of active methylene groups into the γ-position of piperidine skeleton and its application to the synthesis of (−)-cincholoiponic acid
摘要:
Copper ion-catalyzed regioselective introduction of active methylene groups into the gamma-position of piperidine skeleton was exploited. In the case of using chiral ligand as an additive, this reaction proceeded with moderate enantioselectivities. This method was applied to the synthesis of (-)-cincholoiponic acid from N-methoxycarbonylpiperidine. (c) 2006 Elsevier Ltd. All rights reserved.