Ethyl Acetate → (2S,6R)-4-(4-chloro-quinolin-7-ylmethyl)-2,6-dimethyl-3-oxo-piperazine-1-carboxylic acid benzyl ester

HRID 1432910ノート

反応式

HRID 1432910 の反応式
[CH2:1]([O:8][C:9]([N:11]1[C@H:16]([CH3:17])[CH2:15][NH:14][C:13](=[O:18])[C@@H:12]1[CH3:19])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[H-].[Na+].Br[CH2:23][C:24]1[CH:33]=[C:32]2[C:27]([C:28]([Cl:34])=[CH:29][CH:30]=[N:31]2)=[CH:26][CH:25]=1.C(OCC)(=O)C>C1COCC1.CN(C=O)C>[CH2:1]([O:8][C:9]([N:11]1[C@H:16]([CH3:17])[CH2:15][N:14]([CH2:23][C:24]2[CH:33]=[C:32]3[C:27]([C:28]([Cl:34])=[CH:29][CH:30]=[N:31]3)=[CH:26][CH:25]=2)[C:13](=[O:18])[C@@H:12]1[CH3:19])=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

参加物

7

反応物 4

HCID 8857Ethyl AcetateHCID 24758Sodium hydrideHCID 217084447-Bromomethyl-4-chloroquinolineHCID 57050377(2S, 6R)-2,6-Dimethyl-3-oxo-piperazine-1-carboxylic acid benzyl ester

生成物 1

HCID 57020279(2S,6R)-4-(4-chloro-quinolin-7-ylmethyl)-2,6-dimethyl-3-oxo-piperazine-1-carboxylic acid benzyl ester収率 83%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

(2S, 6R)-2,6-Dimethyl-3-oxo-piperazine-1-carboxylic acid benzyl ester (750 mg, 2.86 mmol) is dissolved in 20 mL of THF and 2 mL of DMF. Sodium hydride (60%, 142.6 mg, 6.20 mmol) is added at 0° C., and the reaction is left to stir at room temperature for thirty minutes at which time the 7-bromomethyl-4-chloro-quinoline (952 mg, 3.72 mmol) is added. The reaction is complete after stirring for four hours. Ethyl acetate (200 mL) is added to the mixture, and the reaction is quenched with 3 mL of H2O. The two layers are separated, and ethyl acetate (2×30 mL) is used to extract and dried over magnesium sulfate. The residue after filtration and concentration is chromatographed on silica gel (60% EtOAc/Hexane) to give (2S,6R)-4-(4-chloro-quinolin-7-ylmethyl)-2,6-dimethyl-3-oxo-piperazine-1-carboxylic acid benzyl ester (1.04 g, 83%).

後処理

  1. waitthe reaction is left
  2. additionis added
  3. customthe reaction is quenched with 3 mL of H2O
  4. customThe two layers are separated
  5. extractionto extract
  6. dry with materialdried over magnesium sulfate
  7. filtrationThe residue after filtration and concentration
  8. customis chromatographed on silica gel (60% EtOAc/Hexane)

出典と根拠

ORDレコード
ord-d890a8735a2e457aa255c09f5817ef3a
出典データセット
uspto-grants-2009_11
特許番号
US07612075B2

反応ノート

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