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Phenylacetic Acid → Tert-butyl (3s)-3-methyl-4-(phenylacetyl)piperazine-1-carboxylate

HRID 38269
ノート
印刷プレビュー

反応式

HRID 38269 の反応式
[CH3:1][C@@H:2]1[NH:7][CH2:6][CH2:5][N:4]([C:8]([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9])[CH2:3]1.[C:15]1([CH2:21][C:22](O)=[O:23])[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1.CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C.CCOC(C)=O>[CH3:1][C@@H:2]1[N:7]([C:22](=[O:23])[CH2:21][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[CH2:6][CH2:5][N:4]([C:8]([O:10][C:11]([CH3:13])([CH3:12])[CH3:14])=[O:9])[CH2:3]1
参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 4

HCID 999Phenylacetic AcidHCID 81531DiisopropylethylamineHCID 7023035(S)-1-Boc-3-methylpiperazineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)

生成物 1

HCID 67131985Tert-butyl (3s)-3-methyl-4-(phenylacetyl)piperazine-1-carboxylate収率 83%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

実験手順

3-Methyl-(3S)-1-piperazinecarboxylic acid, 1,1-dimethylethyl ester (250 mg), benzeneacetic acid (210 mg) and Hunigs base (450 □l) were dissolved in DMF (10 ml) and HATU (720 mg) added portionwise over 2 min. The reaction mixture was stirred for 3 h, diluted with EtOAc, washed with water and brine, dried (MgSO4) and concentrated in vacuo. The residue was purified by chromatography on silica with 25% EtOAc/isohexane as eluent to give the sub-title compound (330 mg)

後処理

  1. washwashed with water and brine
  2. dry with materialdried (MgSO4)
  3. concentrationconcentrated in vacuo
  4. customThe residue was purified by chromatography on silica with 25% EtOAc/isohexane as eluent

出典と根拠

ORDレコード
ord-1732818959bb4e6aa79ac33906d948fb
出典データセット
uspto-grants-2013_09
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08524715B2

反応ノート

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