Thionyl Chloride → 3-(Chloromethyl)-2-methylpyridine
反応式
O[CH2:2][C:3]1[C:4]([CH3:9])=[N:5][CH:6]=[CH:7][CH:8]=1.O=S(Cl)[Cl:12]>C(Cl)Cl>[Cl:12][CH2:2][C:3]1[C:4]([CH3:9])=[N:5][CH:6]=[CH:7][CH:8]=1参加物
4
実験手順
To a stirred solution of 3-hydroxymethyl-2-methylpyridine from Step 1 above (1.00 g, 8.13 mmol) in 40 mL of CH2Cl2 at ambient temperature was added SOCl2 (9.0 mL, 123 mmol). The reaction mixture was stirred for 4 hours, and the solvent and excess SOCl2 were evaporated under reduced pressure. The residue was partitioned between CH2Cl2 and saturated aqueous NaHCO3. The organic layer was separated, and the aqueous layer was washed with additional CH2 Cl2 (2×40 mL). The combined organic layers were evaporated under reduced pressure to give 3-chloromethyl-2-methylpyridine as a pale yellow-brown solid (TLC: Rf =0.85 in 5% MeOH in CH2Cl2 ; FAB MS m/z 142 (M+ +H)).
後処理
- customthe solvent and excess SOCl2 were evaporated under reduced pressure
- customThe residue was partitioned between CH2Cl2 and saturated aqueous NaHCO3
- customThe organic layer was separated
- washthe aqueous layer was washed with additional CH2 Cl2 (2×40 mL)
- customThe combined organic layers were evaporated under reduced pressure
出典と根拠
- ORDレコード
- ord-b03b7005ae0f4e16a4358a35620a3d77
- 出典データセット
- uspto-grants-1998_03
- 特許番号
- US05726172
反応ノート
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