Rhodium-Catalyzed Enantioselective Addition of Organoaluminum Reagents to<i>N</i>-Tosyl Ketimines
作者:Sebastian Hirner、Andreas Kolb、Johannes Westmeier、Sandra Gebhardt、Stephen Middel、Klaus Harms、Paultheo von Zezschwitz
DOI:10.1021/ol501372u
日期:2014.6.6
Rhodium(I)/Binap complexescatalyzehighlyenantioselective additions of methyl- and arylaluminum reagents to cyclic α,β-unsaturated N-tosyl ketimines. Depending on the solvent and substituents at the ring, the reaction occurs either in a 1,2-manner to deliver α-tertiary allylic amines or in a 1,4-manner to yield, after subsequent reduction, 3-substituted cycloalkyl amines. Well known in the case of