“…C{H}-NMR (101 MHz, DMSO-d 6 ) δ 194.4, 174.0, 168.7, 148.5, 135.9, 135.8, 133.0, 131.1, 129.5, 129.1 (2 × C), 128.9 (2 × C), 126.9, 124.3, 54.6, 46.4 ppm. HRMS (ESI): m/z calcd for C 17 H 10 NClNaO 3 + [M + Na] + : 334.0241, found: 334.0231.2-(4-Bromophenyl)-3a,8a-dihydroindeno[1,2-c]pyrrole-1,3,8(2H)-trione (7ai) 15. GP-3 was carried out with 2-iodobenzaldehyde 2a (58 mg, 0.25 mmol), N-(4-bromo)phenylmaleimide 6i (75 mg, 0.30 mmol), Pd(OAc) 2 (5.6 mg, 10 mol %, 0.025 mmol), AgOAc (83 mg, 0.50 mmol), NaOAc (21 mg, 0.25 mmol), and TFA (2 mL) at 100 °C for 6 h in an oil bath.…”