Table 4.
1a (0.1 mmol), 2 (0.12 mmol), [Rh(COD)Cl]2 (2.5 mol%), (R)-DTBM-BINAP (5.0 mol%), (PhO)2P(O)OH (50 mol%), CPME (0.2 mL), 60 °C. Isolated yields. rr’s (3:4) determined by 1H NMR analysis of the unpurified reaction mixture. Enantioselectivities determined by chiral SFC.