An efficient preparation of optically active α-furfuryl amide by kinetic resolution using the modified sharpless asymmetric epoxidation reagents
作者:Wei-Shan Zhou、Zhi-Hui Lu、Zhi-Min Wang
DOI:10.1016/s0040-4020(01)86343-2
日期:1993.3
Kinetic resolution of α-furfuryl amide was first carried out by using the modified Sharpless asymmetric epoxidation reagent to give the slow-reacting enantiomers, (S)-1a–h and (R)-1b,f in high enantioselectivity(90–100% e.e) and high chemical yield (45–50%). Similar results were obtained from the fast-reacting enantiomers. This kinetic resolution exhibits the reversed enantioselectivity.
首先通过使用改良的Sharpless不对称环氧化试剂进行α-糠基酰胺的动力学拆分,得到具有高对映选择性的慢反应对映异构体(S)-1 a–h和(R)-1 b,f。 100%ee)和高化学产率(45-50%)。从快速反应的对映异构体获得了相似的结果。该动力学拆分显示出反向的对映选择性。