4-Methoxybenzylamine → 1,1,1-Trifluoro-3-((4-methoxybenzyl)amino)propan-2-ol

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-(trifluoromethyl)oxirane (2.00 g, 17.8 mmol) in isopropanol (20 mL) in a pressure tube was added (4-methoxyphenyl)methanamine (7.35 g, 53.5 mmol). The reaction vessel was capped and heated at 80° C. for 3 h. The reaction mixture was concentrated and purified by silica gel chromatography (80 g REDISEP® column, eluting with a gradient from 0-60% EtOAc in hexanes). The required fractions were concentrated to obtain Intermediate A125A (3.1 g, 70.6% yield) as a white solid. MS(ES) m/z=287 [M+H]+. 1H NMR (400 MHz, DMSO-d6) δ 7.29-7.17 (m, 2H), 6.87 (d, J=8.5 Hz, 2H), 6.25 (br. s., 1H), 4.04 (td, J=7.8, 3.3 Hz, 1H), 3.72 (s, 3H), 3.66 (d, J=1.8 Hz, 2H), 2.74-2.55 (m, 2H), 2.08 (br. s., 1H).

Provenance & Evidence