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Asymmetric Catalytic Aza-Henry Reactions Leading to 1,2-Diamines and 1,2-Diaminocarboxylic Acids



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In the wake of the aldol and Mannich reactions, textbook examples of asymmetric reactions, comes the aza-Henry reaction (aka nitro-Mannich reaction), which leads to 1,2-diamines or α,β-diaminocarboxylic acids (see scheme, PG=protecting group). Recent developments point to a bright future for this transformation.

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