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Ammonium Chloride → (S)-t-Butyl 2-(2-(2-((tert-butyldiphenylsilyl)oxy)acetyl)hydrazinecarbonyl)pyrrolidine-1-carboxylate
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Ammonium Chloride | HCID 25517 | — |
| 反応物 | 1-Hydroxybenzotriazole | HCID 75771 | — |
| 反応物 | 1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride | HCID 2723939 | — |
| 反応物 | tert-Butyl (2S)-2-(hydrazinecarbonyl)pyrrolidine-1-carboxylate | HCID 10014050 | — |
| 反応物 | 2-((tert-Butyldiphenylsilyl)oxy)acetic acid | HCID 11141564 | — |
| 溶媒 | Water | HCID 962 | — |
| 溶媒 | Chloroform | HCID 6212 | — |
| 生成物 | (S)-t-Butyl 2-(2-(2-((tert-butyldiphenylsilyl)oxy)acetyl)hydrazinecarbonyl)pyrrolidine-1-carboxylate | HCID 86706754 | 61.1% |
反応手順
A mixture of CHCl3 (100 mL) with (S)-t-butyl 2-(hydrazinecarbonyl)pyrrolidine-1-carboxylate (4.791 g), 2-((t-butyldiphenylsilyl)oxy)acetic acid (6.28 g), WSC.HCl (4.371 g) and HOBt.H2O (3.081 g) was stirred at room temperature for 15 hours. To the reaction mixture, a saturated aqueous solution of NH4Cl (500 mL) was added, followed by extraction with AcOEt (500 mL). The organic layer was washed successively with saturated aqueous sodium bicarbonate (500 mL) and brine (500 mL), dried (MgSO4), filtered and concentrated to give a crude product, which was further purified by silica gel chromatography (AcOEt/hexane) to give the titled compound (6.42 g, colorless amorphous.)
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US09181229B2 |
| 出典データセット | uspto-grants-2015_11 |
| ORD ID | ord-e8a1dea0fe524084abffffd8048bbc51 |
| 出典メモ | uspto-grants-2015_11 |