An Efficient Nickel-Catalyzed Asymmetric Oxazole-Forming Ugi-Type Reaction for the Synthesis of Chiral Aryl-Substituted THIQ Rings
作者:Dan Li、Dongxu Yang、Linqing Wang、Xihong Liu、Kezhou Wang、Jie Wang、Pengxin Wang、Yuyang Liu、Haiyong Zhu、Rui Wang
DOI:10.1002/chem.201700970
日期:2017.5.23
A nickel‐catalyzed asymmetric oxazole‐forming Ugi reaction of C,N‐cyclic azomethine imines and isonitriles is disclosed. The reported protocol proceeds smoothly, and gives the corresponding adducts, which contain two important pharmaceutically active ring‐systems (tetrahydroquinoline and oxazole rings), in good yields and excellent enantioselectivities by employing an easily accessible chiral diamine
公开了镍催化的C,N-环偶氮甲亚胺和异腈的Ugi反应形成Ugi反应。所报道的方案进展顺利,并通过使用容易获得的手性二胺作为配体,以较高的收率和优异的对映选择性提供了包含两个重要的药物活性环系统(四氢喹啉和恶唑环)的相应加合物。这种简单而有效的策略可轻松获得一系列C1取代的芳基四氢异喹啉。