Diastereoselective synthesis of atropisomers containing two non-biaryl stereogenic axes: stereochemical relay through stereogenic centres in dihydrostilbene-2,2′-dicarboxamides
Synthesis of atropisomeric diamides with remotely related stereogenic axes by stereoselective additions to imines
作者:Jonathan Clayden、Neil Westlund、Francis X. Wilson
DOI:10.1016/s0040-4039(99)00520-1
日期:1999.4
Atroposelective addition of axially chiral laterally lithiated 2-alkyl-1-naphthamides to 6-substituted 2-(N-methylformimino)benzamides leads, after equilibration of the new stereogenic axis to its more stable conformation, to single atropisomeric diastereoisomers of diamides bearing remotely related stereogenic axes separated by one or two stereogenic centres. The newly created MeNH-bearing stereogenic centre "relays" stereochemical information from the first axis to the second. (C) 1999 Elsevier Science Ltd. All rights reserved.