Rhodium-catalyzed enantioselective 1,4-additions of arylboronic acids to substituted enones
作者:Laura Mediavilla Urbaneja、Norbert Krause
DOI:10.1016/j.tetasy.2006.01.006
日期:2006.2
The rhodium-catalyzed enantioselective 1,4-addition of arylboronicacids to the bifunctional Michael acceptors 1–3 in the presence of phosphoramidites L2–L4 occurs regioselectively at the endocyclic C–C double bond and in up to 95% ee. The presence of KOH is required to increase the reactivity so that less boronic acid and lower reaction temperatures can be used. The corresponding addition to chiral