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Acetic Acid → (2S,6RS)-4-(4-amino-quinazolin-7-ylmethyl)-2,6-dimethyl-3-oxo-piperazine-1-carboxylic acid benzyl ester

HRID 1432929
ノート
印刷プレビュー

反応式

HRID 1432929 の反応式
C(O)(=O)C.[N:5]1[CH:10]=[N:9][CH:8]=[N:7][CH:6]=1.[CH2:11]([O:18][C:19]([N:21]1[CH:26]([CH3:27])[CH2:25][N:24]([CH2:28][C:29]2[CH:34]=C[C:32](C#N)=[C:31](N)[CH:30]=2)[C:23](=[O:38])[C@@H:22]1[CH3:39])=[O:20])[C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1.C(OCC)(=O)C>C(O)C>[CH2:11]([O:18][C:19]([N:21]1[CH:26]([CH3:27])[CH2:25][N:24]([CH2:28][C:29]2[CH:34]=[C:6]3[C:32]([C:10]([NH2:5])=[N:9][CH:8]=[N:7]3)=[CH:31][CH:30]=2)[C:23](=[O:38])[C@@H:22]1[CH3:39])=[O:20])[C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 176Acetic AcidHCID 8857Ethyl AcetateHCID 92621,3,5-TriazineHCID 57054342(2S,6RS)-4-(3-amino-4-cyano-benzyl)-2,6-dimethyl-3-oxo-piperazine-1-carboxylic acid benzyl ester

生成物 1

HCID 57166330(2S,6RS)-4-(4-amino-quinazolin-7-ylmethyl)-2,6-dimethyl-3-oxo-piperazine-1-carboxylic acid benzyl ester収率 85.1%

試薬・触媒・溶媒 1

HCID 702Ethanol溶媒2 回

実験手順

Glacial acetic acid (0.9 ml, 15.54 mmol) and 1,3,5-triazine (840 mg, 10.36 mmol) is added to a solution of (2S,6RS)-4-(3-amino-4-cyano-benzyl)-2,6-dimethyl-3-oxo-piperazine-1-carboxylic acid benzyl ester (2.03 g, 5.18 mmol) in ethanol. The resulting mixture is heated to reflux overnight. Replaced the ethanol with ethyl acetate and washed with saturated sodium bicarbonate (5 mL). The ethyl acetate layer is dried with magnesium sulfate, filtered and condensed. The resulting residue is purified by flash colunm (SiO2, 20% methanol/methylene chloride) to give the product (2S,6RS)-4-(4-amino-quinazolin-7-ylmethyl)-2,6-dimethyl-3-oxo-piperazine-1-carboxylic acid benzyl ester (1.85 g, 85%) as a yellow solid. C23H25N5O3 MS m/z: 420.

後処理

  1. temperatureThe resulting mixture is heated
  2. temperatureto reflux overnight
  3. washwashed with saturated sodium bicarbonate (5 mL)
  4. dry with materialThe ethyl acetate layer is dried with magnesium sulfate
  5. filtrationfiltered
  6. customcondensed
  7. customThe resulting residue is purified by flash colunm (SiO2, 20% methanol/methylene chloride)

出典と根拠

ORDレコード
ord-5d393f2a70f241ca989619526d6e0e9f
出典データセット
uspto-grants-2009_11
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07612075B2

反応ノート

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