Diethyl Ether → HCID 19090134、化合物
反応式
[Cl:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][CH:9]=1)[CH2:5]Cl.[Mg].[CH3:11][N:12]([CH3:21])[C:13]1[CH:14]=[C:15]([CH:18]=[CH:19][CH:20]=1)[C:16]#N.CC[O:24]CC>>[ClH:1].[Cl:1][C:2]1[CH:3]=[C:4]([CH2:5][C:16]([C:15]2[CH:18]=[CH:19][CH:20]=[C:13]([N:12]([CH3:21])[CH3:11])[CH:14]=2)=[O:24])[CH:7]=[CH:8][CH:9]=1参加物
実験手順
A solution of 10.0 g of 3-chlorobenzyl chloride in 100 ml of dry ether was added slowly to 2.26 g of magnesium in 75 ml of dry ether under nitrogen. The Grignard reagent was stirred at ambient temperature for one hour and then added to a solution of 4.5 g of 3-dimethylaminobenzonitrile in 150 ml of dry ether. After the addition a catalytic amount of CuBr was added and the solution stirred overnight. The reaction was quenched with 200 ml of ammonium chloride solution and diluted with water. The layers were separated and the aqueous phase extracted with ethyl acetate. The combined organic layers were dried (Na2SO4), filtered and evaporated. The residue was purified by flash chromatography (silica gel: 8:1 hexane-ethyl acetate) and then treated with ethereal HCl until acidic to wet litmus paper. The precipitate was collected and recrystallized from ethanol-ether to give 3.8 g of 2-(3-chlorophenyl)1-[3-(dimethylamino)phenyl]ethanone hydrochloride, m.p. 92°-94° C.
後処理
- additionwas added
- customThe reaction was quenched with 200 ml of ammonium chloride solution
- additiondiluted with water
- customThe layers were separated
- extractionthe aqueous phase extracted with ethyl acetate
- dry with materialThe combined organic layers were dried (Na2SO4)
- filtrationfiltered
- customevaporated
- customThe residue was purified by flash chromatography (silica gel: 8:1 hexane-ethyl acetate)
- additiontreated with ethereal HCl until acidic to wet litmus paper
- customThe precipitate was collected
- customrecrystallized from ethanol-ether
出典と根拠
- ORDレコード
- ord-b8279d5ee51d493d81dc7a1f8a892707
- 出典データセット
- uspto-grants-1991_04
- 特許番号
- US05006563
反応ノート
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