A comparative study of diphosphine and phosphinamine palladium complexes on a new substrate for the intramolecular asymmetric Heck reaction
作者:Denis Kiely、Patrick J. Guiry
DOI:10.1016/s0040-4039(02)02429-2
日期:2002.12
Palladium-catalysed intramolecularasymmetric Heck reactions were performed on triflate 5 using complexes derived from BINAP and a range of oxazoline-containing phosphinamine ligands. The optimum ee obtained was 85% employing the t-butyl-substituted ferrocenyloxazoline ligand 6. The isomer distribution of the product spirooxindoles was dependent on the ligand chosen, with the oxazoline-containing ligands