Yang Xiaoyin, Knochel Paul
Department Chemie und Biochemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, Haus F, 81377 München, Germany.
Org Lett. 2006 Apr 27;8(9):1941-3. doi: 10.1021/ol060540m.
[reaction: see text] Beta-iodo-alpha,beta-unsaturated carbonyl compounds undergo a stereoselective iodine-copper exchange reaction with (Nphyl)(2)CuLi, providing the corresponding alkenyl cuprates with retention of the double bond configuration. No competitive addition/elimination was observed, and the resulting cuprates were successfully functionalized with various electrophiles.
[反应:见正文] β-碘代-α,β-不饱和羰基化合物与(N-苯基)₂CuLi发生立体选择性碘-铜交换反应,生成相应的烯基铜酸盐,双键构型得以保留。未观察到竞争性的加成/消除反应,所得的铜酸盐能成功地与各种亲电试剂发生官能团化反应。