Iodoethane → 3-[4-(benzyloxy)phenyl]-6-chloro-1-ethyl-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one

HRID 1044226

反応式

HRID 1044226 の反応式
Cl[C:2]1[C:7]([NH:8][C:9](=[O:15])OC(C)(C)C)=[CH:6][C:5]([Cl:16])=[CH:4][N:3]=1.[CH2:17]([O:24][C:25]1[CH:31]=[CH:30][C:28]([NH2:29])=[CH:27][CH:26]=1)[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.[CH3:32][C:33]1(C)C2C=CC=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=2OC2C1=CC=CC=2P(C1C=CC=CC=1)C1C=CC=CC=1.CC(C)([O-])C.[Na+].[H-].[Na+].C(I)C.[Cl-].[Cl-].[Ca+2]>C1(C)C=CC=CC=1.CN(C=O)C.CO.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].CC(O)C>[CH2:17]([O:24][C:25]1[CH:26]=[CH:27][C:28]([N:29]2[C:2]3=[N:3][CH:4]=[C:5]([Cl:16])[CH:6]=[C:7]3[N:8]([CH2:32][CH3:33])[C:9]2=[O:15])=[CH:30][CH:31]=1)[C:18]1[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=1

参加物

13

反応物 7

HCID 6340IodoethaneHCID 228604-BenzyloxyanilineHCID 24758Sodium hydrideHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 5284359Calcium ChlorideHCID 23676156Sodium t-butoxideHCID 86660673Tert-butyl 2,5-dichloropyridin-3-ylcarbamate

生成物 1

HCID 585773703-[4-(benzyloxy)phenyl]-6-chloro-1-ethyl-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one収率 247.5%

試薬・触媒・溶媒 5

HCID 9811564Bis(dibenzylideneacetone)palladium触媒HCID 887Methanol溶媒HCID 1140Toluene溶媒HCID 3776Isopropanol溶媒HCID 6228Dimethylformamide溶媒

反応条件

温度
100 °C

実験手順

The mixture of tert-butyl (2,5-dichloropyridin-3-yl)carbamate (7.0 g), 4-(benzyloxy)aniline (7.95 g), 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene (1.231 g), Pd2(dba)3 (0.974 g) and sodium tert-butoxide (3.58 g) in toluene (160 mL)-2-propanol (40.0 mL) was stirred at 100° C. under Ar overnight. The reaction mixture was concentrated in vacuo. The residue was purified by column chromatography (silica gel, eluted with 0%-100% EtOAc in hexane) to give intermediate. To the intermediate in DMF (100 mL) were added NaH (3.19 g) and ethyl iodide (20.75 g). The mixture was stirred at room temperature under a dry atmosphere (CaCl2 tube) for 1 h. The reaction mixture was diluted with MeOH and concentrated in vacuo. The residue was purified by column chromatography (NH silica gel, eluted with 0%-50% EtOAc in hexane) to give 3-[4-(benzyloxy)phenyl]-6-chloro-1-ethyl-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (2 g) as a colorless solid.

後処理

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customThe residue was purified by column chromatography (silica gel, eluted with 0%-100% EtOAc in hexane)
  3. customto give intermediate
  4. concentrationconcentrated in vacuo
  5. customThe residue was purified by column chromatography (NH silica gel, eluted with 0%-50% EtOAc in hexane)

出典と根拠

ORDレコード
ord-c99913e3fddd4c7bab334223fac7ed22
出典データセット
uspto-grants-2013_10
特許番号
US08563575B2

関連ノート

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