A Highly Enantioselective Zirconium Catalyst for Intramolecular Alkene Hydroamination: Significant Isotope Effects on Rate and Stereoselectivity
作者:Kuntal Manna、Songchen Xu、Aaron D. Sadow
DOI:10.1002/anie.201006163
日期:2011.2.18
Zirconiumcatalysts sparkle: A new chiral zirconium complex has been used to catalyze hydroamination reactions to cyclize aminopentenes into 2‐methylpyrrolidines (see scheme). The rate law supports a mechanism involving a reversible substrate–catalyst interaction that precedes the rate‐determining step. A new mechanism for zirconium‐catalyzed hydroamination has been proposed based on kinetic isotope