2-Bromopyridine → ethyl 4-((2S,4R)-1-acetyl-2-methyl-4-(pyridin-2-ylamino)-1,2,3,4-tetrahydroquinolin-6-yl)benzoate

HRID 882257ノート

反応式

HRID 882257 の反応式
CC(C)([O-])C.[Na+].[C:7]([N:10]1[C:19]2[C:14](=[CH:15][C:16]([C:20]3[CH:30]=[CH:29][C:23]([C:24]([O:26][CH2:27][CH3:28])=[O:25])=[CH:22][CH:21]=3)=[CH:17][CH:18]=2)[C@H:13]([NH2:31])[CH2:12][C@@H:11]1[CH3:32])(=[O:9])[CH3:8].Br[C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][N:35]=1.C1(P(C2CCCCC2)C2C=CC=CC=2C2C(N(C)C)=CC=CC=2)CCCCC1>C1(C)C=CC=CC=1>[C:7]([N:10]1[C:19]2[C:14](=[CH:15][C:16]([C:20]3[CH:30]=[CH:29][C:23]([C:24]([O:26][CH2:27][CH3:28])=[O:25])=[CH:22][CH:21]=3)=[CH:17][CH:18]=2)[C@H:13]([NH:31][C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][N:35]=2)[CH2:12][C@@H:11]1[CH3:32])(=[O:9])[CH3:8]

参加物

6

反応物 4

HCID 79732-BromopyridineHCID 27342172-(Dicyclohexylphosphino)-2'-(dimethylamino)biphenylHCID 23676156Sodium t-butoxideHCID 67205707ethyl 4-((2S,4R)-1-acetyl-4-amino-2-methyl-1,2,3,4-tetrahydroquinolin-6-yl)benzoate

生成物 1

HCID 86709426ethyl 4-((2S,4R)-1-acetyl-2-methyl-4-(pyridin-2-ylamino)-1,2,3,4-tetrahydroquinolin-6-yl)benzoate収率 39%

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒

反応条件

温度
120 °C

実験手順

Sodium tert-butoxide (135 mg, 1.41 mmol)) was added to a suspension of ethyl 4-((2S,4R)-1-acetyl-4-amino-2-methyl-1,2,3,4-tetrahydroquinolin-6-yl)benzoate (for a preparation see Intermediate 16) (450 mg, 1.28 mmol), 2-bromopyridine (403 mg, 2.55 mmol), 2′-(dicyclohexylphosphino)-N,N-dimethyl-[1,1′-biphenyl]-2-amine (40 mg, 0.102 mmol) and tris(dibenzyldieneacetone)dipalladium(0) (47 mg, 0.051 mmol) in anhydrous toluene (4.5 mL). The mixture was heated under microwave irradiation to 120° C. for 1 h in a sealed vial. The mixture was partitioned between EtOAc and water, the aqueous layer was extracted twice with EtOAc, the combined organic phases were dried by passing through a hydrophobic frit and concentrated in vacuo to give a residue. The residue was purified by chromatography (10 g column, EtOAc/cyclohexane gradient followed by MeOH/EtOAc gradient) to give ethyl 4-((2S,4R)-1-acetyl-2-methyl-4-(pyridin-2-ylamino)-1,2,3,4-tetrahydroquinolin-6-yl)benzoate (216 mg, 0.503 mmol, 39% yield) as a brown gum. LCMS: (Formate, 2 min), Rt=0.84 min, MH+430.

後処理

  1. customThe mixture was partitioned between EtOAc and water
  2. extractionthe aqueous layer was extracted twice with EtOAc
  3. customthe combined organic phases were dried
  4. concentrationconcentrated in vacuo
  5. customto give a residue
  6. customThe residue was purified by chromatography (10 g column, EtOAc/cyclohexane gradient followed by MeOH/EtOAc gradient)

出典と根拠

ORDレコード
ord-88325e161bcd4fc3ab5e4e5de68fc8f6
出典データセット
uspto-grants-2015_03
特許番号
US08993554B2

反応ノート

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