摘要:
提出通过Michael加成反应合成一系列二级砜类化合物的新方法.该方法以α,β-不饱合酮为共轭体系,苯亚磺酸为亲核试剂.反应条件温和,产率高,可通过直接过滤重结晶得到产物并成功将反应扩大至克级.利用手性开环冠醚催化剂,对二级砜类化合物的不对称合成进行探索.并对所合成化合物的化学结构通过核磁共振(nuclear magnetic resonance,NMR)氢谱、碳谱进行表征.
摘要:
The first handbook to focus on the asymmetric synthesis of different types of three-membered rings. The outstanding and experienced authors have an excellent international reputation and cover cyclopropanes, epoxides and aziridines as well as chiral oxaziridines in equal measure. To this end, they describe in detail different synthetic approaches starting with chiral substrates as well as the application of chiral metal- or organocatalysts. Furthermore, methods for the kinetic resolution of initially racemic products are treated alongside recent advances and novel developments in established techniques for the synthesis of three-membered rings. With its structured composition this is of high interest to scientists in methodological and natural product synthesis as well as those in industrial and pharmaceutical chemistry.