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Water → 1-(3-(Benzyloxy)-2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-5-yl)-4-(4-methoxyphenyl)piperazine

HRID 1272322
ノート
印刷プレビュー

反応式

HRID 1272322 の反応式
[H-].[Na+].[CH3:3][O:4][C:5]1[CH:10]=[CH:9][C:8]([N:11]2[CH2:16][CH2:15][N:14]([C:17]3[C:18]([CH3:31])=[C:19]([CH3:30])[C:20]4[O:24][C:23]([CH3:26])([CH3:25])[CH:22]([OH:27])[C:21]=4[C:28]=3[CH3:29])[CH2:13][CH2:12]2)=[CH:7][CH:6]=1.[CH2:32](Br)[C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1.O>CN(C=O)C>[CH2:32]([O:27][CH:22]1[C:21]2[C:28]([CH3:29])=[C:17]([N:14]3[CH2:13][CH2:12][N:11]([C:8]4[CH:7]=[CH:6][C:5]([O:4][CH3:3])=[CH:10][CH:9]=4)[CH2:16][CH2:15]3)[C:18]([CH3:31])=[C:19]([CH3:30])[C:20]=2[O:24][C:23]1([CH3:26])[CH3:25])[C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=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 962WaterHCID 7498Benzyl BromideHCID 24758Sodium hydrideHCID 674202085-(4-(4-Methoxyphenyl)piperazin-1-yl)-2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-3-ol

生成物 1

HCID 184560331-(3-(Benzyloxy)-2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-5-yl)-4-(4-methoxyphenyl)piperazine収率 63%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

Sodium hydride (60%, 0.06 g, 1.5 mmol) was added to a solution of 5-(4-(4-methoxyphenyl)piperazin-1-yl)-2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-3-ol (0.30 g, 0.75 mmol) obtained in Reference Example 18 in DMF (5 ml) under ice cooling. The mixture was stirred for 30 minutes, and then benzyl bromide (0.14 g, 0.84 mmol) was added. After stirring for 30 minutes under ice cooling, the mixture was stirred for 30 minutes at room temperature. The resulting mixture was poured into water and extracted with ethyl acetate. The organic extract was washed with water and saturated aqueous sodium chloride, dried over anhydrous sodium sulfate, and concentrated. The residue was purified with silica gel column chromatography (hexane/ethyl acetate=9/1) to obtain 0.23 g (yield 62%) of the title compound via recrystallization (diisopropyl ether-methanol). mp. 98–99° C.

後処理

  1. stirringAfter stirring for 30 minutes under ice cooling
  2. stirringthe mixture was stirred for 30 minutes at room temperature
  3. extractionextracted with ethyl acetate
  4. extractionThe organic extract
  5. washwas washed with water and saturated aqueous sodium chloride
  6. dry with materialdried over anhydrous sodium sulfate
  7. concentrationconcentrated
  8. customThe residue was purified with silica gel column chromatography (hexane/ethyl acetate=9/1)

出典と根拠

ORDレコード
ord-8326d695d04a426392298a56f831323c
出典データセット
uspto-grants-2007_04
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07208495B2

反応ノート

読み込み中…

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