Exploiting a novel size exclusion phenomenon for enantioselective acid/base cascade catalysis
作者:Michael E. Muratore、Lei Shi、Adam W. Pilling、R. Ian Storer、Darren J. Dixon
DOI:10.1039/c2cc32258g
日期:——
A novel size exclusion phenomenon between PS-BEMP and sterically bulky BPAs, has been discovered and exploited in a one-pot base-catalysed Michael addition/acid-catalysed enantioselective N-acyliminium cyclisation cascade, allowing the preparation of structurally complex β-carbolines with moderate to good enantiocontrol.
在一锅法碱催化迈克尔加成/酸催化手性N-酰基亚胺离子环化级联反应中,发现并利用了聚苯乙烯-BEMP与立体位阻较大的BPA之间的新型尺寸排阻现象,从而实现了中等至良好手性控制下结构复杂的β-咔啉类化合物的制备。