作者:Subrata Ghosh、Mecheril Valsan Nandakumar、Harald Krautscheid、Christoph Schneider
DOI:10.1016/j.tetlet.2010.02.007
日期:2010.4
The Cu(OTf)2-bipyridine-catalyzed, enantioselective, direct α-amination of β-keto esters and β-diketones with diethyl azodicarboxylate (DEAD) has been studied. Exceptionally high enantioselectivities of up to 99% ee were found for 1-indanone-based β-keto esters in particular even for substrates and reagents carrying conventional ester groups such as methyl and ethyl.
研究了Cu(OTf)2-联吡啶对偶氮二甲酸二乙酯(DEAD)对β-酮酯和β-二酮的对映选择性,直接α-胺化反应。对于基于1-茚满酮的β-酮酯,特别是对于带有常规酯基(例如甲基和乙基)的底物和试剂,发现高达99%ee的极高对映选择性。