Triethylamine → HCID 66898674, compound

Participants

Reaction Steps

Triethylamine (5.2 mL 37.8 mmol) and (1-(2-Bromoethyl)-4-methoxybenzene (1.9 mL, 12.60 mmol) were added to a solution of p-tolylhydrazine hydrochloride (2 gm, 12.60 mmol) in ethanol (30 mL) and the resulting solution was stirred at RT for an 1 h after which it was heated at 90° C. for 2-3 h. The reaction mixture was concentrated to dryness and basified with aq. saturated NaHCO3, and extracted in ethyl acetate. The combined organic layers was dried over Na2SO4 and concentrated to obtain (1-(4-methoxyphenyl)-1-p-tolylhydrazine (2.8 g). (1-(4-methoxyphenyl)-1-p-tolylhydrazine (2.8 g, 10.9 mmol) and 8-methyl-8-azabicyclo[3.2.1]octan-3-one (1.5 gm, 10.9 mmol) were taken in ethanolic HCl (30 mL), and stirred at RT for 15 min and the solvent was removed in vacuo. The residue was taken in ethanol (30 mL) and heated at 90° C. for 3. After completion of the reaction (the progress of the reaction was monitored by LCMS), the reaction mixture was concentrated to dryness and basified with aq. saturated NaHCO3. The product was extracted in ethyl acetate and the organic layers were separated, dried over Na2SO4 and concentrated. The resulting crude product was purified over neutral alumina (10% Me-OH in dichloromethane) to obtain the product as free base (500 mg). The NMR data for the compound is as follows: 1H NMR (DMSO)—7.40-7.35 (d, 1H), 7.25 (s, 1H), 6.90-6.85 (d, 1H), 6.85-6.80 (d, 2H), 6.80-6.75 (d, 2H), 4.25-4.10 (t, 2H), 3.85-3.75 (m, 1H), 3.65 (s, 3H), 3.00-2.80 (t, 2H), 2.65-2.55 (d, 2H), 2.30 (s, 3H), 2.20-2.00 (m, 1H), 1.95 (s, 3H), 1.45-1.40 (m, 2H), 1.40-1.35 (m, 2H).

Provenance & Evidence