Efficient Lipase-Catalyzed Kinetic Resolution and Dynamic Kinetic Resolution of β-Hydroxy Nitriles. Correction of Absolute Configuration and Transformation to Chiral β-Hydroxy Acids and γ-Amino Alcohols
作者:Oscar Pàmies、Jan-E. Bäckvall
DOI:10.1002/1615-4169(200210)344:9<947::aid-adsc947>3.0.co;2-z
日期:2002.10
Chemoenzymatic dynamic kinetic resolution of β-hydroxy nitriles 1 has been carried out using Candida antarctica lipase B and a ruthenium catalyst. The use of a hydrogen source to depress ketone formation in the dynamic kinetic resolution yields the corresponding acetates 2 in good yield and high enantioselectivity. It is shown that the ruthenium catalyst and the enzyme can be recycled when used in
β-羟基腈1的化学酶动力学动力学拆分已使用南极假丝酵母脂肪酶B和钌催化剂进行。使用氢源以动态动力学拆分抑制酮的形成以良好的产率和高的对映选择性产生相应的乙酸酯2。结果表明,钌催化剂和酶在单独的反应中使用时可以循环使用。我们还报告了从1和2制备各种对映体纯的β-羟基酸衍生物和γ-氨基醇的情况。后一化合物也用于建立1和2的正确绝对构型。