Highly Stereoselective and Efficient Synthesis of Functionalized Cyclohexanes with Multiple Stereocenters
作者:Christoph Schneider、Oliver Reese
DOI:10.1002/1521-3765(20020603)8:11<2585::aid-chem2585>3.0.co;2-c
日期:2002.6.3
Chiral 7-oxo-2-enimides 2, which were readily obtained through a silyloxy-Cope rearrangement of syn-aldol products 1, have proved to be versatile substrates for a one-step, highly efficient and stereoselective synthesis of functionalized cyclohexanes. Organocopper and organoaluminum reagents have been employed as nucleophiles that underwent a conjugate addition to the enimide structure of the Cope
通过顺式醛醇缩合产物1的甲硅烷氧基-Cope重排容易获得的手性7-氧代-2-烯酰亚胺2已被证明是用于一步一步,高效且立体选择性地合成官能化环己烷的通用底物。有机铜和有机铝试剂已被用作亲核试剂,对Cope产品的亚胺结构进行了共轭加成。原位形成的烯醇化物在分子内羟醛或曼尼希反应中分别攻击醛或亚胺离子,分别以中等至良好的产率直接产生环己醇3和4和环己胺5,并具有良好的立体控制。