関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|
| 反応物 | Citric Acid | HCID 311 | — |
| 反応物 | Water | HCID 962 | — |
| 反応物 | Sodium borohydride | HCID 4311764 | — |
| 反応物 | 2-Methyl-3-[(S)-5-oxo-1-((S)-1-phenyl-ethyl)-pyrrolidin-3-yl]-propionic Acid Methyl Ester | HCID 59094038 | — |
| 溶媒 | Ethanol | HCID 702 | — |
| 生成物 | (S)-4-(3-Hydroxy-2-methyl-propyl)-1-((S)-1-phenyl-ethyl)-pyrrolidin-2-one | HCID 59093973 | 59% |
反応手順
To the ester 93 (4.82 g, 0.017 mol) in EtOH (100 mL) was added NaBH4 (3.7 g, 0.10 mol) and the mixture heated to reflux for 2.5 hours. The solution was cooled to 0° C. and 1 M citric acid carefully added followed by water. The solution was concentrated to half volume added and extracted with ether. The combined organic extracts were dried (MgSO4) and concentrated. Flash chromatography (1:1 hexane/acetone) of the residue gave the product as an oil (2.6 g, 59%). MS m/z 262 (M+H, 100%).
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| 特許番号 | US06642398B2 |
|---|
| 出典データセット | uspto-grants-2003_11 |
|---|
| ORD ID | ord-5f9e41891af7422cb0aaa7efa916ab43 |
|---|
| 出典メモ | uspto-grants-2003_11 |
|---|
