Trifluoroacetic acid → 3-(6-(5-benzylbenzofuran-2-yl)-3,4-dihydroisoquinolin-2(1H)-yl)propanoic acid

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Reaction Steps

To a solution of tert-butyl 3-(6-(5-benzylbenzofuran-2-yl)-3,4-dihydroisoquinolin-2(1H)-yl)propanoate (40 mg, 0.086 mmole) in CH2Cl2(1 ml) was added TFA (1 ml). The mixture was stirred at room temperature for 3 hours. All the solvents were evaporated. The mixture was purified by reverse phase preparative HPLC to give the title compound (14 mg, 40%). 1H NMR (400 MHz, CD3OD) δ 7.77 (m, 2H), 7.42 (dd, 1H), 7.40 (s, 1H), 7.20-7.30 (m, 5H), 7.10 (m, 3H), 4.50 (s, 2H), 4.04 (s, 2H), 3.64 (dd, 2H), 3.55 (dd, 2H), 3.26 (dd, 2H), 2.90 (dd, 2H). MS (ESI) m/z: Calculated: 411.18; Observed: 412.10 (M++1).

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