Scheme 1.

Ligand Investigation for the Tandem Intramolecular β-C(sp3)–H Olefination and Lactonization.a,b
aConditions: 10a (0.1 mmol), Pd(OAc)2 (10 mol%), Ligand (L) (12 mol%), Ag2CO3 (2.0 equiv), NaOAc (1.0 equiv), HFIP (1.0 mL), 110 °C, 15h. bYields were determined by 1H NMR analysis using CH2Br2 as an internal standard. c Ligand (L) (20 mol%).