Enantioselective Cu(I)-Catalyzed Cycloaddition of Prochiral Diazides with Terminal or 1-Iodoalkynes
作者:Cai Wang、Ren-Yi Zhu、Kui Liao、Feng Zhou、Jian Zhou
DOI:10.1021/acs.orglett.9b04522
日期:2020.2.21
We report an unprecedented highly enantioselective desymmetric Cu(I)-catalyzed 1,3-dipolar cycloaddition of diazides with terminal alkynes and 1-iodoalkynes, affording tertiary alcohols bearing a 1,2,3-triazole moiety in high yield and excellent ee value. PYBOX ligands with a C4 shielding group once again show the promising ability to achieve higher enantioselectivity.
我们报告了前所未有的高度对映体选择性不对称铜(I)催化重氮与末端炔烃和1-碘代炔烃的叠氮化物的1,3-偶极环加成反应,从而以高收率和优异的ee值提供了带有1,2,3-三唑部分的叔醇。具有C4保护基的PYBOX配体再次显示出实现更高对映选择性的有希望的能力。