Triple selectivity: Highly substituted indenylamines can be obtained with high enantioselectivity by formal [3+2] additions of aryl ketimines with internal alkynes. These rhodium(I)-catalyzed processes proceed by selective CH activation of one of the two arene substituents, regioselective carbometalation of the alkyne, and enantioselective addition across the imine.
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Tran et al. (2011) studied this question.
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