Pyridine → Chloromethyl cyclohexyl carbonate
反応式
[CH:1]1([OH:7])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.N1C=CC=CC=1.Cl[C:15]([O:17][CH2:18][Cl:19])=[O:16]>C(Cl)Cl>[C:15](=[O:16])([O:7][CH:1]1[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1)[O:17][CH2:18][Cl:19]参加物
5
実験手順
A solution of 3.0 g of cyclohexanol and 2.4 ml of pyridine in 30 ml of methylene chloride is cooled to -78° C. and, with stirring, 2.4 ml of chloromethyl chloroformate is added dropwise to the solution. After completion of addition, a cold bath is removed. The mixture is stirred at room temperature for 16 hours, washed with three 30-ml portions of saturated aqueous sodium chloride and dried over anhydrous magnesium sulfate. The solvent is then distilled off under reduced pressure to give 4.5 g of colorless oil, which is crystallized from ligroine giving the title compound as colorless crystals melting at 36°-37° C.
後処理
- additionAfter completion of addition, a cold bath
- customis removed
- stirringThe mixture is stirred at room temperature for 16 hours
- washwashed with three 30-ml portions of saturated aqueous sodium chloride
- dry with materialdried over anhydrous magnesium sulfate
- distillationThe solvent is then distilled off under reduced pressure
出典と根拠
- ORDレコード
- ord-f340e814c83e40bdaf92181a5ebbdd2b
- 出典データセット
- uspto-grants-1992_06
- 特許番号
- US05120841
反応ノート
読み込み中…