反应详情

Thioacetic acid (3.32 g, 36.0 mmol) in MeOH (150 ml) was treated successively with NaOMe (25% in MeOH, 12 g, 0.08 mol) and tetradecyl bromide (10.0 g, 0.036 mol) and stirred vigorously at room temperature for 48 h. The mixture was poured into H2O, acidified to pH 2 (conc. HCl) and extracted with diethyl ether. Drying (MgSO4) and concentration in vacuo afforded a crude solid which was purified by flash column chromatography (FCC) (25% EtOAc in hexanes to 35% EtOAc in hexanes) to yield 3 as a colourless solid (8.6 g, 82%); m.p. 64-66° C. (lit. 65-67° C.); δH(300 M, CDCl3) 0.89 (t, 3H, J=6.7 Hz), 1.27 (m, 22H), 1.32 (m, 2H), 1.61 (m, 2H), 2.67 (t, 2H, J 7.4) and 3.28 (s, 2H); MS (FAB+) 289 (M+H)+, 288 M+; HRMS: Found M+0288.211823. Calc. for C16H32O2S: M+0288.212302.

1. extractionextracted with diethyl ether
2. customDrying
3. concentration(MgSO4) and concentration in vacuo
4. customafforded a crude solid which
5. customwas purified by flash column chromatography (FCC) (25% EtOAc in hexanes to 35% EtOAc in hexanes)