Hydrochloric Acid → Ethyl 2-[(3-chloro-2'-cyanobiphenyl-4-yl)methyl]-3-oxohexanoate

HRID 1674243

反応式

HRID 1674243 の反応式
[H-].[Na+].[C:3]([CH2:8][C:9]([O:11][CH2:12][CH3:13])=[O:10])(=[O:7])[CH2:4][CH2:5][CH3:6].Br[CH2:15][C:16]1[CH:21]=[CH:20][C:19]([C:22]2[C:23]([C:28]#[N:29])=[CH:24][CH:25]=[CH:26][CH:27]=2)=[CH:18][C:17]=1[Cl:30].Cl>O1CCCC1>[Cl:30][C:17]1[CH:18]=[C:19]([C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=2[C:28]#[N:29])[CH:20]=[CH:21][C:16]=1[CH2:15][CH:8]([C:3](=[O:7])[CH2:4][CH2:5][CH3:6])[C:9]([O:11][CH2:12][CH3:13])=[O:10]

参加物

6

反応物 4

HCID 313Hydrochloric AcidHCID 24758Sodium hydrideHCID 238498Ethyl 3-oxohexanoateHCID 269675484'-(Bromomethyl)-3'-chloro-[1,1'-biphenyl]-2-carbonitrile

生成物 1

HCID 57460890Ethyl 2-[(3-chloro-2'-cyanobiphenyl-4-yl)methyl]-3-oxohexanoate

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

To a suspension of 60% sodium hydride (0.40 g) in tetrahydrofuran (20 mL) was added dropwise a solution of ethyl butyrylacetate (2.13 g) in tetrahydrofuran (10 mL). After stirring for 30 min, 4′-(bromomethyl)-3′-chlorobiphenyl-2-carbonitrile (2.06 g) was added. The mixture was stirred at room temperature for 15 hr, and 1 M hydrochloric acid was added. The mixture was extracted with ethyl acetate, and the organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was purified by silica gel column chromatography to give ethyl 2-[(3-chloro-2′-cyanobiphenyl-4-yl)methyl]-3-oxohexanoate. Then, a solution of the obtained ethyl 2-[(3-chloro-2′-cyanobiphenyl-4-yl)methyl]-3-oxohexanoate, ethanimidamide hydrochloride (2.55 g), 28% sodium methoxide (7.80 g) in methanol (50 mL) was stirred overnight. The solvent was evaporated under reduced pressure, and saturated aqueous ammonium chloride solution was added to the residue. The precipitated solid was collected by filtration, and washed with water and diethyl ether to give the title compound (0.64 g, 73%) as a white solid.

後処理

  1. stirringThe mixture was stirred at room temperature for 15 hr
  2. extractionThe mixture was extracted with ethyl acetate
  3. washthe organic layer was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated
  6. customThe residue was purified by silica gel column chromatography

出典と根拠

ORDレコード
ord-0317ab5d7877420fad62e417172b89d4
出典データセット
uspto-grants-2011_08
特許番号
US07998968B2

関連ノート

読み込み中…