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 enantioselectivesynthesis 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-