Triethylamine → HCID 15860308, compound

Participants

Reaction Steps

To a magnetically stirred solution of (trans)-2-(2-fluoro-5-methoxyphenyl)cyclopropanemethanamine (600 mg, 3.1 mmol), Et3N (909 mg, 9.0 mmol), in dry dichloromethane (15 mL) at 0° C. was added isobutyryl chloride (352 mg, 3.3 mmol) dropwise. The resulting suspension was then allowed to warm to room temperature and stirred for 18 h. The solvents were removed and the residue was taken into EtOAc (100 mL) and washed sequentially with H2O, 5% citric acid, 5% K2CO3, brine, and dried over K2CO3. Concentration by rotary evaporation yielded a crude oil which was then purified by Kugelrohr distillation. Recrystallization of the resultant solid from Et2O/hexane (1:1) gave 380 mg (47% yield) of the title compound: mp 93°-94° C.; 1H NMR (300 MHz, CDCl3) δ0.82-0.88 (m, 1H), 0.97-1.03 (m, 1H), 1.13 (d, J=8.1 Hz, 6H), 1.14-1.24 (m, 1H), 1.85-1.91 (m, 1H), 2.25-2.30 (m, 1H), 2.93-3.02 (m, 1H), 3.52 (dt, I=7.8, 13.8 Hz, 1H), 3.72 (s, 3H), 5.74 (br s, 1H), 6.41-6.44 (m, 1H), 6.59-6.64 (m, 1H), 6.91 (t, J=6.5 Hz, 1H); IR (NaCl Film) 3298, 2962, 1642, 1546, 1502, 1428 cm-1 ; MS (isobutane--DCI) m/e 253; Analysis calc'd for C15H20NO2F: C, 67.90; H, 7.60; N, 5.28; found: C, 68.18; H, 7.77; N, 5.24.

Provenance & Evidence