Functionalization of Ketones via Their Enamines

A synthetic equivalent is an compound exhibiting the following properties (1) a synthetic Synthetic Equivalents equivalent reacts in a way that the actual substrate or the actual reagent cannot. (2) After having reacted a synthetic equivalent can be modified in such a way that the same product is obtained indirectly whose direct generation—i.e., its generation from the actual substrate or reagent—was not possible. 

Catalytic Enantioselec-tive Aldol Addition Using Enamine Chemistry 

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