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Monoethyl malonate → Ethyl 3-[4-(2-tert-butylphenyl)piperazin-1-yl]-3-oxopropanoate

HRID 534873
ノート
印刷プレビュー

反応式

HRID 534873 の反応式
Cl.Cl.[C:3]([C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=1[N:13]1[CH2:18][CH2:17][NH:16][CH2:15][CH2:14]1)([CH3:6])([CH3:5])[CH3:4].[C:19]([O:25][CH2:26][CH3:27])(=[O:24])[CH2:20][C:21](O)=[O:22].Cl.C(N=C=NCCCN(C)C)C.O.ON1C2C=CC=CC=2N=N1>O.CN(C)C=O.C(N(CC)CC)C>[C:3]([C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=1[N:13]1[CH2:18][CH2:17][N:16]([C:21](=[O:22])[CH2:20][C:19]([O:25][CH2:26][CH3:27])=[O:24])[CH2:15][CH2:14]1)([CH3:6])([CH3:4])[CH3:5]
参加物実験手順後処理出典と根拠反応ノート

参加物

8

反応物 4

HCID 70615Monoethyl malonateHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 667511491-(2-Tert-butylphenyl)piperazine dihydrochloride

生成物 1

HCID 66750910Ethyl 3-[4-(2-tert-butylphenyl)piperazin-1-yl]-3-oxopropanoate収率 69%

試薬・触媒・溶媒 3

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒HCID 8471Triethylamine溶媒

実験手順

A mixture of 1-(2-tert-butylphenyl)piperazine dihydrochloride obtained in Reference Example 1 (400 mg), ethyl hydrogen malonate (225 mg), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (326 mg), 1-hydroxy-1H-benzotriazole monohydrate (260 mg), triethylamine (0.697 mL), and N,N-dimethylformamide (5 mL) was stirred at room temperature for over-night. Water was added to the reaction solution, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by flash column chromatography (silica gel, 90:10-70:30 hexane/ethyl acetate) to provide the title compound (312 mg, 69%) as a colorless oil.

後処理

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customthe residue was purified by flash column chromatography (silica gel, 90:10-70:30 hexane/ethyl acetate)

出典と根拠

ORDレコード
ord-35070f26f39c43528dc8c20853180c88
出典データセット
uspto-grants-2014_10
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08853215B2

反応ノート

読み込み中…

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