Triethylamine → 1-[3,5-Diethyl-1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-pyrazol-4-ylmethyl]naphthalen-2-ol

Participants

Reaction Steps

A solution of 303 mg (2.1 mmol) of 2-naphthol in 5 mL of dry ether was treated with 50 mg (2.1 mmol) of sodium hydride and the mixture was stirred for 15 minutes. A solution of 368 mg (1.0 mmol) of the compound of step C in 5 mL of dry ether and 126 mg (0.174 mL, 1.22 mmol) of triethylamine was cooled to 0° C. and treated with 114 mg (0.077 mL, 1.0 mmol) of methanesulfonyl chloride. Triethylamine hydrochloride was removed by filtration and the filtrate was added to the above suspension of sodium 2-naphthoxide and the reaction mixture was stirred at room temperature for 12 hours. The reaction mixture was then partitioned between water and ether and the organic extracts were dried and evaporated to give the desired product in 29% yield. 1H-NMR (CDCl3) δ 1.00 (3H, t, J=7),1.20 (3H, t, J=7), 2.44 (2H, q, J=7), 2.72 (2H, q J=7), 4.58 (2H, s), 6.96-7.84 (8H, m).

Provenance & Evidence