反应详情

Isobutylene was bubbled through 75% H2SO4 solution at -5 degrees C. until 2.65 g (47.2 mmol) of isobutylene had been absorbed. The mixture was treated with 3.8 g (20.1 mmol) of 3-bromothiophenol and then allowed to warm to room temperature and stirred for 72 hours. The reaction mixture was then poured into 40 ml of an ice/water mixture and then extracted with ether. The ether extracts were combined and washed successively with 5% NaOH, water and saturated NaCl solution and then dried (MgSO4). The solvent was removed in-vacuo and the residue distilled (69-75 degrees C., 0.6 mm) to give the title compound as a pale yellow oil. PMR (CDCl3): & 1.30 (9H, s), 7.23 (1H, t, J~8.0 Hz), 7.45-7.54 (2H, m), 7.72 (1H, t, J~1.8 Hz).

1. customIsobutylene was bubbled through 75% H2SO4 solution at -5 degrees C
2. extractionextracted with ether
3. washwashed successively with 5% NaOH, water and saturated NaCl solution
4. dry with materialdried (MgSO4)
5. customThe solvent was removed in-vacuo
6. distillationthe residue distilled (69-75 degrees C., 0.6 mm)