Synthesis of Optically Active Oxazolines by an Organocatalytic Isocyanoacetate Aldol Reaction with α-Keto Esters
作者:Jiean Chen、Yong Huang、Fei Wang
DOI:10.1055/s-0036-1588718
日期:2017.7
combination of an α-keto ester and an α-isocyanoacetate establishes an oxazoline which could be a potential chiral ligand for metal-mediated catalysis, and also could be easily converted into an opticallyactive β-hydroxy-α-amino acid.
据报道,对映选择性 [3+2] 环化可用于构建中等产率和高达 97% ee 的手性恶唑啉骨架。反应性和立体化学区分源于双功能催化剂的非共价相互作用和取向。α-酮酯和 α-异氰基乙酸酯的新组合建立了恶唑啉,它可以成为金属介导催化的潜在手性配体,也可以很容易地转化为光学活性的 β-羟基-α-氨基酸。