Dabco → HCID 57750071, compound

Participants

Reaction Conditions

Reaction Steps

A solution of methyl 4-amino-3-iodobenzoate (0.5 g, 1.8 mmol), 1-(4-fluorophenyl)piperidin-4-one (1.05 g, 5.4 mmol), 1,4-diazabicyclo[2.2.2]octane (0.61 g, 5.4 mmol) and palladium (II) acetate (20 mg, 0.09 mmol) in DMF (10.0 mL) was degassed, filled with argon (3×) and allowed to stir at 110° C. for 3.5 h. The reaction mixture was allowed to cool to room temperature and partitioned between EtOAc (40 mL) and water (40 mL), and the aqueous layer was extracted with EtOAc (2×20 mL). The combined organic layers were washed with water (2×20 mL), brine (1×20 mL), dried (MgSO4), filtered and concentrated. Column chromatography (25% EtOAc/hexane) provided, upon trituration with ethyl ether, methyl 2-(4-fluorophenyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole-8-carboxylate (23 in Scheme 1(k)) as a yellow solid (0.23 g, 39%). 1H NMR (CDCl3, 300 MHZ) 8.17 (s, 1H), 7.77 (d, J=7.2 Hz, 1H), 7.23 (d, J=8.0 Hz, 3H), 7.09 (t, J=8.1 Hz, 2H), 4.53 (s, 2H), 3.96 (s, 3H), 3.73 (t, J=5.6 Hz, 2H), 3.12 (br s, 2H) ppm; MS (ES) 325 (M+H).

Provenance & Evidence