Silver Ion-Induced Grob Fragmentation of γ-Amino Iodides: Highly Stereoselective Synthesis of Polysubstituted Piperidines
摘要:
A new concerted silver ion-mediated Grob fragmentation process is described in which a 1,2-dihydropyridinium ion is formed and trapped in situ with Grignard reagents in a highly regio- and diastereoselective fashion. Using this methodology, 2,3,6-trisubstituted piperidines were synthesized in good yields and further derivatized to polysubstituted indolizidine.
Silver Ion-Induced Grob Fragmentation of γ-Amino Iodides: Highly Stereoselective Synthesis of Polysubstituted Piperidines
作者:Guillaume Barbe、Miguel St-Onge、André B. Charette
DOI:10.1021/ol8024605
日期:2008.12.4
A new concerted silver ion-mediated Grob fragmentation process is described in which a 1,2-dihydropyridinium ion is formed and trapped in situ with Grignard reagents in a highly regio- and diastereoselective fashion. Using this methodology, 2,3,6-trisubstituted piperidines were synthesized in good yields and further derivatized to polysubstituted indolizidine.