作者:Delfino Chamorro-Arenas、Lilia Fuentes、Leticia Quintero、Silvano Cruz-Gregorio、Herbert Höpfl、Fernando Sartillo-Piscil
DOI:10.1002/ejoc.201700658
日期:2017.8.2
diastereomeric 3,4-epoxy-2-piperidones is reported. For this synthesis, a regioselective and stereodivergent CuI-catalyzed epoxide-ring-opening reaction of epoxyamide precursors to give the 4-(4-fluorophenyl)-2-piperidone skeleton with the correct absolute configuration is crucial. Using CuBr·SMe2 as a catalyst, the epoxide-ring-opening reaction takes place with inversion of configuration; the configuration
据报道,从非对映异构体3,4-环氧--2-哌啶酮中非对映异构地合成(-)-帕罗西汀的方法。对于该合成,环氧酰胺前体的区域选择性和立体发散的Cu I催化的环氧化物开环反应以得到具有正确的绝对构型的4-(4-氟苯基)-2-哌啶酮骨架是至关重要的。使用CuBr · SMe 2作为催化剂,环氧化物的开环反应发生构型的反转。使用CuI时,配置会保留下来。