The Heck reaction of dihydrofuran 3 with aryl triflates 4 and 6a–d and alkenyl triflate 8 in the presence of the chiral ligand (R)-BITIANP 1 provides the 2-substituted 2,3-dihydrofurans 5a, 7a–d and 9, respectively, with complete regioselectivity, high enantioselectivity (86–96% ee) and good yields (76–93%).
L. F. Tietze and K. Thede, Chem. Commun., 1999, 1811 DOI: 10.1039/A905309C
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