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Copper-Catalyzed Direct Asymmetric Aldol Reaction of Glycine Schiff Bases to Access syn-β-Hydroxy-α-amino Esters
Organic Letters ( IF 4.9 ) Pub Date : 2024-09-10 , DOI: 10.1021/acs.orglett.4c03085
Toshifumi Takeuchi 1 , Masakatsu Shibasaki 1
Affiliation  

This study reported a copper-catalyzed direct asymmetric aldol reaction between aldehydes and glycine Schiff bases with methyl, allyl, and tert-butyl esters. Additionally, this reaction afforded high yields of syn-β-hydroxy-α-amino esters with excellent enantio- and diastereoselectivities (93–99% ee, up to >99:1 dr). The aldol reaction accepted aromatic, linear aliphatic, and α-substituted aliphatic aldehydes.

中文翻译:


铜催化甘氨酸席夫碱直接不对称羟醛反应生成顺式-β-羟基-α-氨基酯



该研究报道了醛和甘氨酸席夫碱与甲基、烯丙基和丁基酯之间的铜催化的直接不对称羟醛反应。此外,该反应提供了高产率的顺式-β-羟基-α-氨基酯,具有优异的对映选择性和非对映选择性(93–99% ee,高达>99:1 dr)。羟醛反应接受芳香族、直链脂肪族和α-取代的脂肪族醛。
更新日期:2024-09-10
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