反応 #2366152

反応方程式

3-methoxy-3-methylbutan-1-ol

p-toluene sulfonyl chloride

→

3-methoxy-3-methylbutyl 4-methylbenzenesulfonate

収率 49.3%

溶媒

DCM

反応条件

後処理

1. 1
   洗浄The mixture was washed with satd
2. 2
   乾燥NaHCO3, then brine, dried over Na2SO4
3. 3
   濃縮concentrated to dryness

実験手順

A solution of 3-methoxy-3-methylbutan-1-ol (2.50 g, 21.16 mmol) in DCM (30 mL) was treated with p-toluene sulfonyl chloride (5.00 g, 26.2 mmol) followed by TEA (4.28 g, 42.3 mmol) and stirred at RT for 3 h. The mixture was washed with satd. NaHCO3, then brine, dried over Na2SO4 and concentrated to dryness to afford 3-methoxy-3-methylbutyl 4-methylbenzenesulfonate (2.84 g, 49%). 1H NMR (400 MHz, DMSO-d6): δ 7.76 (d, J=8.2 Hz, 2 H), 7.45 (d, J=8.1 Hz, 2 H), 4.03 (t, J=7.2 Hz, 2 H), 2.96 (s, 3 H), 2.38 (s, 3 H), 1.75 (t, J=7.2 Hz, 2 H), 1.01 (s, 6 H); MS (ESI) m/z: 295.0 (M+Na+).

出典