Enantio- and diastereoselective palladium catalysed arylative and vinylative allene carbocyclisation cascades
作者:Meiling Li、Alison Hawkins、David M. Barber、Patrick Bultinck、Wouter Herrebout、Darren J. Dixon
DOI:10.1039/c3cc42079e
日期:——
The enantioselective synthesis of heavily decorated spirolactams has been accomplished via an arylative or vinylative allene carbocyclisation cascade. Mediated by silver phosphate, a range of allene-linked pro-nucleophiles and aryl or vinyl iodides were reacted in the presence of catalytic Pd(OAc)2 and chiral bis(oxazoline) ligands to afford the spirolactam products in good yields and high enantio-
大量装饰的螺内酰胺的对映选择性合成是通过芳基或乙烯基化的异戊烯碳环化级联反应完成的。在磷酸银的介导下,在催化性Pd(OAc)2和手性双(恶唑啉)配体的存在下,使一系列与烯丙基连接的亲核亲核试剂和芳基或乙烯基碘反应,从而以高收率和高对映体产率提供螺内酰胺产品。和非对映选择性。