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1-Hydroxybenzotriazole → tert-butyl 2-amino-3-[3-[(E)-2-(4-fluorophenyl)ethenyl]-4-methoxy-1H-indazol-5-yl]-3-oxopropanoate
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | 1-Hydroxybenzotriazole | HCID 75771 | — |
| 反応物 | Diisopropylethylamine | HCID 81531 | — |
| 反応物 | 1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride | HCID 2723939 | — |
| 反応物 | Glycine tert-butyl ester hydrochloride | HCID 2725036 | — |
| 反応物 | 3-[(E)-2-(4-fluorophenyl)-vinyl]-4-methoxy-1H-indazole-5-carboxylic acid | HCID 59797243 | — |
| 溶媒 | Dimethylformamide | HCID 6228 | — |
| 生成物 | tert-butyl 2-amino-3-[3-[(E)-2-(4-fluorophenyl)ethenyl]-4-methoxy-1H-indazol-5-yl]-3-oxopropanoate | HCID 68933335 | — |
反応手順
3-[(E)-2-(4-Fluorophenyl)-vinyl]-4-methoxy-1H-indazole-5-carboxylic acid obtained by Example 234 and 258 mg of glycine ter-butyl ester hydrochloride were dissolved in 20 mL of N,N-dimethylformamide, and 0.871 mL of diisopropylethylamine and 235 mg of 1-hydroxybenzotriazole were added, and stirred at room temperature for 10 minutes. After cooling to 0° C., 491 mg of WSC hydrochloride was added, and stirred overnight at room temperature. After adding ice water to stop the reaction, the solution was extracted with ethyl acetate. The organic phase was washed with water and saturated brine and dried over anhydrous magnesium sulfate. The solvent was evaporated, to afford 547 mg of the title compound as pale green crystals.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US07429609B2 |
| 出典データセット | uspto-grants-2008_09 |
| ORD ID | ord-6799921308ed475b8a1e13d23b8d1121 |
| 出典メモ | uspto-grants-2008_09 |