Highly Stereoselective Reduction of β-Keto Amides: The First General and Efficient Approach to N-mono- and non-Substitutedanti-α-Alkyl β-Hydroxy Amides
A Mn‐catalyzed diastereo‐ and enantioselective hydrogenation of α‐substituted β‐ketoamides has been realized for the first time under dynamic kinetic resolution conditions. anti‐α‐Substituted β‐hydroxy amides, which are useful building blocks for the synthesis of bioactive molecules and chiral drugs, were prepared in high yields with excellent selectivity (up to >99 % dr and >99 % ee) and unprecedentedly
Highly Stereoselective Reduction of β-Keto Amides: The First General and Efficient Approach to N-mono- and non-Substituted<i>anti</i>-α-Alkyl β-Hydroxy Amides
The first general protocol for the anti-selective reduction of α-alkyl-β-keto amides is described. This simple and efficient methodology based on an open-chain Felkin-Anh model pathway, allows the isolation of N-mono- and non-substituted anti-α-substituted β-hydroxy amides in good yields and with high diastereoselectivity.