Enantioselective 1,5-electrocyclization. Synthesis of optically active indolines
作者:Siem J. Veenstra、W. Nico Speckamp
DOI:10.1039/c39820000369
日期:——
Intramolecular base-catalysed 1,5-elecctrocyclization of aldehyde imines derived from o-aminophenyl succinimide (3) in the presence of a chiral alcohol yields chiral indolines (4) with optical purities ranging from 17 to 31%.