Abstract
The asymmetric aza-Claisen rearrangement of ( E)-3-alkyl-2-propenyl N-[4-trifluoromethyl)phenyl]benzimidates was catalyzed by a homochiral cationic palladium(II) complex generated from PdCl 2{( S)-2-(2-diphenylphosphino)phenyl-4-benzyloxazoline} and silver tetrafluoroborate (Pd:silver=1:1) to give ( S)- N-(1-alkyl-2-propenyl)- N-[4-(trifluoromethyl)phenyl]benzamide of up to 81% ee.
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