Fig. 6: Synthesis and X-ray molecular structure of 10.

a Standard conditions for the synthesis of 10: 8-2 (10 µmol), Pd(OAc)2 (0.2 mmol), NaOAc (0.2 mmol), CHCl3 (16 mL) and MeOH (4 mL) refluxed for 12 h. b Impact of other reaction parameters. Isolated yields are given. c Single-crystal X-ray diffraction structure of 10. Meso-substituents and peripheral protons are omitted for clarity. Me: methyl; Mes: 2-mesityl; Boc: tert-butoxycarbonyl; C6F5: pentafluorophenyl; DCE: 1,2-dichloroethane; Et: ethyl; N.D.: not detected.