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5-Amino-1-methyl-1H-pyrazole-4-carbonitrile → 4-amino-5-(1H-benzo[d]imidazol-2-yl)-1-methyl-1H-pyrazolo[3,4-b]pyridin-6(7H)-one
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | 5-Amino-1-methyl-1H-pyrazole-4-carbonitrile | HCID 219740 | — |
| 反応物 | ethyl 2-(1H-1,3-benzodiazol-2-yl)acetate | HCID 308071 | — |
| 反応物 | Lithium Hexamethyldisilazide | HCID 2733832 | — |
| 溶媒 | Tetrahydrofuran | HCID 8028 | — |
| 生成物 | 4-amino-5-(1H-benzo[d]imidazol-2-yl)-1-methyl-1H-pyrazolo[3,4-b]pyridin-6(7H)-one | HCID 135496141 | — |
反応手順
5-Amino-1-methyl-1H-pyrazole-4-carbonitrile (1.0 eq) and ethyl 1H-benzimidazol-2-ylacetate (1.0 eq) were dissolved in THF and dried over sieves. LiHMDS (3 eq) was added dropwise and the mixture stirred for 18 hours. The mixture was filtered and diluted with EtOAc, then washed with an aqueous saturated NH4Cl solution. The aqueous layer was washed with EtOAc (3×), and the organic layers combined, dried over MgSO4, and concentrated yielding pure product. LC/MS m/z 281.0 (MH+), Rt 1.41 minutes.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US06756383B2 |
| 出典データセット | uspto-grants-2004_06 |
| ORD ID | ord-1c679456dc4d4e8aaad9c958ecf5ab34 |
| 出典メモ | uspto-grants-2004_06 |