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Cesium carbonate → ethyl 5-[4-(6-ethoxy-2,4-dimethylpyridin-3-yl)-2-nitrophenyl]-1-[(S)-tetrahydrofuran-3-yl]-1H-pyrazole-4-carboxylate

HRID 1043969
ノート
印刷プレビュー

反応式

HRID 1043969 の反応式
[N+:1]([C:4]1[CH:9]=[C:8](B2OC(C)(C)C(C)(C)O2)[CH:7]=[CH:6][C:5]=1[C:19]1[N:23]([C@H:24]2[CH2:28][CH2:27][O:26][CH2:25]2)[N:22]=[CH:21][C:20]=1[C:29]([O:31][CH2:32][CH3:33])=[O:30])([O-:3])=[O:2].Br[C:35]1[C:36]([CH3:45])=[N:37][C:38]([O:42][CH2:43][CH3:44])=[CH:39][C:40]=1[CH3:41].C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCOCC1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:43]([O:42][C:38]1[N:37]=[C:36]([CH3:45])[C:35]([C:8]2[CH:7]=[CH:6][C:5]([C:19]3[N:23]([C@H:24]4[CH2:28][CH2:27][O:26][CH2:25]4)[N:22]=[CH:21][C:20]=3[C:29]([O:31][CH2:32][CH3:33])=[O:30])=[C:4]([N+:1]([O-:3])=[O:2])[CH:9]=2)=[C:40]([CH3:41])[CH:39]=1)[CH3:44]
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 3

HCID 10796Cesium carbonateHCID 86686354HCID 86686354、化合物HCID 86686385Ethyl 5-[2-nitro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl][(S)-tetrahydrofuran-3-yl]-1H-pyrazole-4-carboxylate

生成物 1

HCID 86686405ethyl 5-[4-(6-ethoxy-2,4-dimethylpyridin-3-yl)-2-nitrophenyl]-1-[(S)-tetrahydrofuran-3-yl]-1H-pyrazole-4-carboxylate

試薬・触媒・溶媒 3

HCID 178418397
HCID 178418397、化合物
触媒
HCID 962Water溶媒
HCID 312751,4-Dioxane溶媒

実験手順

Ethyl 5-[2-nitro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl][(S)-tetrahydrofuran-3-yl]-1H-pyrazole-4-carboxylate obtained in Preparation Example 7-(2) (200 mg) was dissolved in a mixed solution of 1,4-dioxane (4 mL) and water (1 mL). 3-bromo-6-ethoxy-2,4-dimethylpyridine obtained in Preparation Example 51 (121 mg), Pd(PPh3)4 (25 mg) and cesium carbonate (428 mg) were added, and the mixture was reacted using a microwave reactor at 130° C. for three hours. The reaction mixture was returned to room temperature, followed by extraction with ethyl acetate. The organic layer was washed with brine and dried over anhydrous sodium sulfate. The desiccant was removed by filtration, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/n-heptane, 30% to 100%) to give the title compound (97 mg).

後処理

  1. additionwere added
  2. customthe mixture was reacted
  3. customat 130° C.
  4. customfor three hours
  5. customwas returned to room temperature
  6. extractionfollowed by extraction with ethyl acetate
  7. washThe organic layer was washed with brine
  8. dry with materialdried over anhydrous sodium sulfate
  9. customThe desiccant was removed by filtration
  10. concentrationthe filtrate was concentrated under reduced pressure
  11. customThe residue was purified by silica gel column chromatography (ethyl acetate/n-heptane, 30% to 100%)

出典と根拠

ORDレコード
ord-3d2825aacff9468abd4f29f1cb42ddd1
出典データセット
uspto-grants-2013_10
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08563565B2

反応ノート

読み込み中…

このページの内容参加物実験手順後処理出典と根拠反応ノート