8-chloro-2-methyl-1H,2H,3H,4H,5H-pyrido(4,3-b)indole → HCID 68487635, compound

Participants

Reaction Steps

8-Chloro-2,3,4,5-tetrahydro-2-methyl-1H-pyrido[4,3-b]indole (220 mg, 1 mmol) was dissolved in DMF and sodium hydride (120 mg, 3 mmol) was added. The reaction mixture was stirred for 10 min and 2,6-dimethyl-4-(2-methyloxiran-2-yl)pyridine (210.6 mg, 1.3 mmol) was added dropwise to the reaction mixture with constant stirring. The reaction mixture was stirred at RT overnight. The reaction mixture was poured on crushed ice and the precipitate obtained was filtered under vacuum; washed with water and hexane to obtain 1-(8-chloro-1,2,3,4-tetrahydro-2-methylpyrido[4,3-b]indol-5-yl)-2-(2,6-dimethylpyridin-4-yl)propan-2-ol (323 mg) which was dissolved in DCM (3 mL) and cooled to 0° C. Thionylchloride (3 mL) was added dropwise and the reaction mixture was allowed to cool to RT. The reaction mixture was then stirred at RT for 2 h. Thionylchloride was evaporated under vacuum by azeotropic distillation with DCM. 1N NaOH solution was added to basify (pH-12-13) the reaction mixture and the compound extracted with EtOAc (2×30 mL). The organic layer was concentrated under vacuum to get the crude desired product. The crude compound was further purified through reverse phase HPLC. Yield: 17 mg. 1H NMR (CD3OD, D1-HCl salt) δ (ppm): 7.95 (s, 2H), 7.66 (s, 1H), 7.58 (s, 1H), 7.25 (m, 2H), 4.70 (m, 1H), 4.40 (m, 1H), 3.90 (m, 1H), 3.62 (m, 1H), 3.22 (m, 2H), 3.10 (s, 6H), 2.10 (s, 3H).

Provenance & Evidence