Enantioselective Iridium-Catalyzed Hydrogenation of α-Keto Amides to α-Hydroxy Amides
作者:Guoxian Gu、Tilong Yang、Ouran Yu、Hua Qian、Jiang Wang、Jialin Wen、Li Dang、Xumu Zhang
DOI:10.1021/acs.orglett.7b02912
日期:2017.11.3
A highly enantioselective iridium-catalyzed hydrogenation of α-keto amides to form α-hydroxy amides has been achieved with excellent results (up to >99% conversion and up to >99% ee, TON up to 100 000). As an example, this protocol was applied to the synthesis of (S)-4-(2-amino-1-hydroxyethyl)benzene-1,2-diol, the enantiomer of norepinephrine, which is widely used as an injectable drug for the treatment
已经实现了高度对映选择性的铱催化的α-酮酰胺的氢化反应,形成α-羟基酰胺,具有优异的结果(转化率最高> 99%,ee最高> 99%,TON最高100000)。例如,该方案适用于去甲肾上腺素的对映异构体(S)-4-(2-氨基-1-羟乙基)苯-1,2-二醇的合成,该化合物被广泛用作严重低血压的治疗。还进行了密度泛函理论(DFT)计算以揭示反应机理。