Chiral phosphinooxazolines with a bi- or tricyclic oxazoline moiety - applications in Pd-catalyzed allylic alkylations
摘要:
Phosphinooxazolines with a bi- or tricyclic oxazoline moiety are described. In Pd-catalyzed alkylations of 1.3-dimethylallyl acetate with sodium dimethyl malonate enantiomeric excess of up to 89.5 % was obtained. This is the best result so far achieved for this substrate with P,N-chelate ligands. (C) 1998 Elsevier Science Ltd. AII rights reserved.