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3-{1-[3-(Benzyloxy)phenyl]-8-chloroimidazo[1,5-a]pyrazin-3-yl}cyclobutanone → 3-[1-(3-Benzyloxy-phenyl)-8-chloro-imidazo[1,5-a]pyrazin-3-yl]-1-methyl-cyclobutanol

HRID 2373884
ノート
印刷プレビュー

反応式

HRID 2373884 の反応式
[CH2:1]([O:8][C:9]1[CH:10]=[C:11]([C:15]2[N:16]=[C:17]([CH:25]3[CH2:28][C:27](=[O:29])[CH2:26]3)[N:18]3[CH:23]=[CH:22][N:21]=[C:20]([Cl:24])[C:19]=23)[CH:12]=[CH:13][CH:14]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:30][Mg+].[Br-]>C1COCC1.C1(C)C=CC=CC=1.C1COCC1>[CH2:1]([O:8][C:9]1[CH:10]=[C:11]([C:15]2[N:16]=[C:17]([CH:25]3[CH2:28][C:27]([CH3:30])([OH:29])[CH2:26]3)[N:18]3[CH:23]=[CH:22][N:21]=[C:20]([Cl:24])[C:19]=23)[CH:12]=[CH:13][CH:14]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

5

反応物 2

HCID 598528193-{1-[3-(Benzyloxy)phenyl]-8-chloroimidazo[1,5-a]pyrazin-3-yl}cyclobutanoneHCID 178418689HCID 178418689、化合物

生成物 1

HCID 598527383-[1-(3-Benzyloxy-phenyl)-8-chloro-imidazo[1,5-a]pyrazin-3-yl]-1-methyl-cyclobutanol

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒HCID 22635083Tetrahydrofuran toluene溶媒

反応条件

温度
-78 °C

実験手順

3-[1-(3-Benzyloxy-phenyl)-8-chloro-imidazo[1,5-a]pyrazin-3-yl]-cyclobutanone (100 mg, 248 mols) was dissolved in dry THF (1.0 mL) under inert atmosphere and cooled to −78° C. A solution of MeMgBr (40 μL, 322 mols) in toluene: THF (75:25) was added slowly to the cooled solution. After 24 h of reaction at rt the reaction was cooled to 0° C. and quenched with NH4Cl sat. aq. solution and the aqueous layer was washed with EtOAc (2×). The organic layers where combined, dried over sodium sulfate, filtered and concentrated in vacuo. The crude oil was purified by silica gel column chromatography [Jones Flashmaster, 10 g/70 mL cartridge, eluting with 2-5% ((7N NH3) in MeOH):CH2Cl2], yielding 3-[1-(3-Benzyloxy-phenyl)-8-chloro-imidazo[1,5-a]pyrazin-3-yl]-1-methyl-cyclobutanol as a brown solid.

後処理

  1. customAfter 24 h of reaction at rt the reaction
  2. temperaturewas cooled to 0° C.
  3. customquenched with NH4Cl sat. aq. solution
  4. washthe aqueous layer was washed with EtOAc (2×)
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe crude oil was purified by silica gel column chromatography [Jones Flashmaster, 10 g/70 mL cartridge, eluting with 2-5% ((7N NH3) in MeOH):CH2Cl2]

出典と根拠

ORDレコード
ord-7a84ee07003b48fc806dca3f1aba385e
出典データセット
uspto-grants-2008_12
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07459554B2

反応ノート

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