Asymmetric allylic alkylation with palladium coordinated to a new optically active pyrazolylmethane ligand

Article abstract of DOI:10.1016/0022-328X(93)83042-T

The optically active pyrazole 4R-methyl-7R-isopropyl-4,5,6,7-tetrahydroindazole, 3, was prepared from (-)-menthone 1, and used for the preparation of the ligands bis(4R-methyl-7R-isopropyl-4,5,6,7-tetrahydro-N²-indazolyl)methane, 5, bis(4R-meth