Asymmetric Heck Reactions Using Dipeptido Phosphinite Metal Complexes

OPR'2 Scheme 1 Phosphinite derivatives of serine, threonine and tyrosine containing dipeptides: 1 R = H, Boc-Phe-Ser(OPPh2)OMe; 2 R = Me, Boc-PheThr(OPPh2)OMe; 3 R' = Ph, Boc-Phe-Tyr(OPPh2)OMe; 4 R' = cyhex, Boc-PheTyr(OPcyhex2)OMe.