참여 물질
| 역할 | 이름 | HCID | 투입량 |
|---|
| 반응물 | Sulfuric Acid | HCID 1118 | — |
| 반응물 | Sodium Hydroxide | HCID 14798 | — |
| 반응물 | Methyl ((S)-4-Methyl-2-[2-oxo-2-[[(S)-1-phenylethyl]amino]ethyl]pentyl]carbamate | HCID 59832562 | — |
| 생성물 | Pregabalin | HCID 5486971 | 50.4% |
반응 단계
A 0.2 l reactor was loaded with 70% sulfuric acid (200 g) containing compound 26 (10 g, 0.031 mole), and was heated to 115-120° C. for 5-10 hours, and then cooled to room temperature, i.e., about 20° to about 25° C. An aqueous 40% sodium hydroxide solution was added in an amount sufficient to provide a pH of 1. The solution was then extracted with 50 ml of isopropanol, the organic layer was separated, and NH4OH was added in an amount sufficient to provide a pH of 4. The (S)-Pregabalin was precipitated, filtered, and washed with 10 ml of isobutanol. After drying at 55° C. under vacuum, (S)-Pregabalin was obtained as white crystals in a 50.4% yield. Purity: 99.05% area by HPLC.
출처 및 근거
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| 특허 번호 | US07446220B2 |
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| 출처 데이터셋 | uspto-grants-2008_11 |
|---|
| ORD ID | ord-a634d095ebe340c0a11aa592f28b3782 |
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| 출처 메모 | uspto-grants-2008_11 |
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