反应详情

Methyl 2-{[2-(3-tert-butoxyphenyl)ethyl]thio}benzoate (402 mg, 1.167 mmol) was dissolved in DCM (3 ml). Trifluoroacetic acid (3 ml) was added. The mixture was stirred overnight and then evaporated to dryness. Chromatography of the residue on a column (ISOLUTE® SI, 2 g/6 ml) using ethyl acetate/heptane (2.5:97.5, then 5:95, then 10:90 and then 25:75) as eluant gave 260 mg the desired product, yield 77%. 1H NMR (500 MHz, CDCl3): δ 2.94 (t, 2H), 3.17 (t, 2H), 3.95 (s, 3H), 6.18 (s, 1H) 6.77-6.83 (m, 3H), 7.18 (t, 2H), 7.34 (d, 1H), 7.44 (t, 1H) and 7.99 (d, 1H).

1. customevaporated to dryness