摘要:
A zinc carbenoid-initiated chain extension reaction provides access to an organometallic intermediate, which can be used to capture activated imines. Deprotection of the nitrogen and reduction provides access to racemic derivatives of beta-proline. The relative stereochemistry of the beta-proline can be controlled through use of different activating groups on the imine nitrogen. (C) 2012 Elsevier Ltd. All rights reserved.