Cesium carbonate → N-[2-(2,6-Dichlorophenyl)-2H-pyrazolo[4,3-c]pyridin-4-yl]-pyridazine-3,6-diamine

HRID 626668ノート

反応式

HRID 626668 の反応式
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([Cl:8])[C:3]=1[N:9]1[CH:18]=[C:12]2[C:13]([NH2:17])=[N:14][CH:15]=[CH:16][C:11]2=[N:10]1.[NH2:19][C:20]1[N:21]=[N:22][C:23](Cl)=[CH:24][CH:25]=1.CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCOCC1.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]>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([Cl:8])[C:3]=1[N:9]1[CH:18]=[C:12]2[C:13]([NH:17][C:23]3[N:22]=[N:21][C:20]([NH2:19])=[CH:25][CH:24]=3)=[N:14][CH:15]=[CH:16][C:11]2=[N:10]1

参加物

7

反応物 4

HCID 10796Cesium carbonateHCID 216436-Amino-3-chloropyridazineHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 696711782-(2,6-Dichlorophenyl)-2h-pyrazolo[4,3-c]pyridin-4-amine

生成物 1

HCID 69671267N-[2-(2,6-Dichlorophenyl)-2H-pyrazolo[4,3-c]pyridin-4-yl]-pyridazine-3,6-diamine収率 13%

試薬・触媒・溶媒 2

HCID 9811564Bis(dibenzylideneacetone)palladium触媒HCID 312751,4-Dioxane溶媒

反応条件

温度
150 °C

実験手順

A mixture of 2-(2,6-dichlorophenyl)-2H-pyrazolo[4,3-c]pyridine-4-ylamine (100 mg, 0.36 mmol), 3-amino-6-chloropyridazine (57 mg, 0.44 mmol), Pd2(dba)3 (8 mg, 0.009 mmol), Xantphos (21 mg, 0.036 mmol) and cesium carbonate (234 mg, 0.72 mmol) in dioxane (2.5 mL) was degassed with argon then heated at 150° C. for 30 minutes in a microwave reactor. The reaction mixture was partitioned between ethyl acetate and water. The organic layer was washed with brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel flash chromatography (4-7% methanol in DCM) to afford the title compound as a beige solid (17 mg, 13% yield). 1H NMR (400 MHz, DMSO-d6): δ 9.45 (d, J=0.9 Hz, 1H), 7.95-7.89 (m, 2H), 7.86-7.84 (m, 2H), 7.76 (dd, J=9.1, 7.2 Hz, 1H), 7.62 (d, J=9.7 Hz, 1H), 7.57-7.53 (m, 1H). LCMS (Method B): RT=2.56 min, m/z: 372 [M+H+].

後処理

  1. customwas degassed with argon
  2. customThe reaction mixture was partitioned between ethyl acetate and water
  3. washThe organic layer was washed with brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by silica gel flash chromatography (4-7% methanol in DCM)

出典と根拠

ORDレコード
ord-4ffbbf21ed944cf2b1333169b1326a5b
出典データセット
uspto-grants-2016_04
特許番号
US09309240B2

反応ノート

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