作者:Ye Shi、Xiaohan Ye、Qiang Gu、Xiaodong Shi、Zhiguang Song
DOI:10.1039/c5ob00479a
日期:——
triazoles were used as starting materials, followed by sequential epoxidation, rearrangement and reduction to give the corresponding hydroxyl-triazoles. The CalB lipase catalyzed kinetic resolution gave enantiomerically pure (>99% ee) chiral triazoles in excellent yield. These new chiral TAs were also successfully applied as ligands in asymmetric addition of diethylzinc to aldehydes.
我们在本文中描述了通过侧链官能化的手性三唑的第一种简便的合成方法。使用现成的C-乙烯基三唑作为起始原料,然后依次环氧化,重排和还原,得到相应的羟基三唑。CalB脂肪酶催化的动力学拆分以优异的收率得到对映体纯的(> 99%ee)手性三唑。这些新的手性TAs还成功地用作二乙基锌不对称加成到醛中的配体。