Potassium Phosphate, Tribasic → 5-fluoro-1-(3-(1-naphthyloxy)propyl)-3-(1,3,5-trimethyl-1H-pyrazol-4-yl)-1H-indole-2-carboxylic Acid

Participants

Reaction Conditions

Reaction Steps

A mixture of 1,3,5-trimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (43.2 mg), ethyl 3-bromo-5-fluoro-1-(3-(naphthalen-1-yloxy)propyl)-1H-indole-2-carboxylate (The synthesis of this compound was described in EXAMPLE 134B as an intermediate) (43 mg), dicyclohexyl(2′,6′-dimethoxybiphenyl-2-yl)phosphine (15.01 mg) and K3PO4 (58.2 mg) in toluene (2.1 ml) was heated in a microwave reactor (CEM Discover) at 110° C. for 2 hours. The reaction was directly loaded into a silica cartridge, and eluted with 0%-25% ethyl acetate in dichloromethane. The collected desired ester was hydrolized with NaOH in tetrahydrofuran-methanol-H2O at 50° C. overnight to provide the title compound. 1H NMR (400 MHz, dimethyl sulfoxide-d6) δ 8.15 (d, J=8.90 Hz, 1H), 7.86 (d, J=7.36 Hz, 1H), 7.71 (dd, J=9.21, 4.30 Hz, 1H), 7.42-7.56 (m, 3H), 7.32-7.41 (m, 1H), 7.05-7.16 (m, 1H), 6.92 (dd, J=9.36, 2.61 Hz, 1H), 6.86 (d, J=7.36 Hz, 1H), 4.69-5.00 (m, 2H), 4.17 (t, J=5.83 Hz, 2H), 3.72 (s, 3H), 2.27-2.43 (m, 2H), 1.99 (s, 3H), 1.90 (s, 3H).

Provenance & Evidence