Diethyl Ether → 2-Benzyloxycarbonyl-3-azabicyclo(3.1.0)hex-2-ene
反応式
ClO[C:3]([CH3:6])([CH3:5])[CH3:4].[C:7]([CH:10]1[NH:15][CH2:14][CH:13]2[CH:11]1[CH2:12]2)([OH:9])=[O:8].C(N([CH2:21][CH3:22])CC)C.[CH2:23](OCC)C>>[CH2:4]([O:8][C:7]([C:10]1[CH:11]2[CH:13]([CH2:14][N:15]=1)[CH2:12]2)=[O:9])[C:3]1[CH:6]=[CH:22][CH:21]=[CH:23][CH:5]=1参加物
実験手順
1.84 g of tert-butyl hypochlorite was added dropwise to a solution of 3.69 g of the benzyl ester of 2-carboxy-3-azabicyclo(3.1.0)-hexane, containing 84% of trans isomer, in 70 ml of dry diethyl ether at 0° to 5° C. under nitrogen. The solution was stirred at 0° to 5° C., in the dark, for 15 minutes, then 5 ml of freshly-distilled triethylamine was added. The suspension was stirred at room temperature for 2 days, and was then concentrated by evaporation. The residue was shaken with 500 ml of diethyl ether and 25 ml of water, and the ether layer was separated, washed with 25 ml of water, dried over sodium sulfate and the solvent was evaporated. The residue was purified chromatographically to give 2.3 g of 2-benzyloxycarbonyl-3-azabicyclo(3.1.0)hex-2-ene. The identity of the product was confirmed by elemental analysis and IR spectrum analysis.
後処理
- additioncontaining 84% of trans isomer
- customat 0° to 5° C.
- stirringThe suspension was stirred at room temperature for 2 days
- concentrationwas then concentrated by evaporation
- stirringThe residue was shaken with 500 ml of diethyl ether and 25 ml of water
- customthe ether layer was separated
- washwashed with 25 ml of water
- dry with materialdried over sodium sulfate
- customthe solvent was evaporated
- customThe residue was purified chromatographically
出典と根拠
- ORDレコード
- ord-b819cf963b764cd78b44de3a845b79fc
- 出典データセット
- uspto-grants-1981_02
- 特許番号
- US04249936
反応ノート
読み込み中…