Ammonium Chloride → HCID 68283778, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-(2-azido-2-(4-fluorophenyl)ethyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (1 g, 2.75 mmol) in ethanol-water (40-5 mL) was added ammonium chloride (590 mg, 11.02 mmol) and zinc dust (716 mg, 11.02 mmol) and heated at 100° C. for 1 h. After complete conversion of starting material (TLC), ethanol was removed under reduced pressure and 50 mL additional water was added and extracted with DCM (3×100 mL). The organic layer was dried over anhydrous sodium sulfate and concentrated under vacuum to obtain the crude product, which was purified by reverse phase HPLC to obtain 2-(2,8-dimethyl-3,4-dihydro-1H-pyrido[4,3-b]indol-5(2H)-yl)-1-(4-fluorophenyl)ethanamine (730 mg) as the TFA salt. 1H NMR (CD3OD, TFA salt): δ (ppm): 7.27 (m, 1H), 7.21 (m, 3H), 7.10 (m, 3H), 4.60 (m, 3H), 4.50 (m, 1H), 4.24 (m, 1H), 3.69 (m, 1H), 3.44 (m, 1H), 3.04 (m, 1H), 2.96 (s, 3H), 2.56 (m, 1H), 2.41 (s, 3H). Chiral HPLC separated the racemate into enantiomers II-11a-b.

Provenance & Evidence