Enantiopure tetra-ortho-substituted biphenyl phosphinoimine ligands (Ra,S)-3 and (Sa,S)-3 were synthesized via multistep reactions. The first asymmetric addition reactions of arylboronic acids to N-benzylisatin catalyzed by Pd(OAc)2 and (Ra,S)-3 were studied to provide 3-aryl-3-hydroxyoxindoles in moderate yields and enantioselectivities.
通过多步反应合成了对映纯的四邻位取代
联苯膦
亚胺配体(R a,S)-3和(S a,S)-3。研究了Pd(OAc)2和(R a,S)-3催化的芳基
硼酸与N-苄基芥子素的首次不对称加成反应,从而以中等收率和对映选择性提供了3-芳基-3-羟基氧
吲哚。