Phthalimide → benzyl (1S,2R,3S,5S)-2-(1,3-dioxoisoindolin-2-yl)bicyclo[3.1.0]hexan-3-ylcarbamate
反応式
C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[C:20]1(=[O:30])[NH:24][C:23](=[O:25])[C:22]2=[CH:26][CH:27]=[CH:28][CH:29]=[C:21]12.O[C@@H:32]1[C@@H:37]([NH:38][C:39](=[O:48])[O:40][CH2:41][C:42]2[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=2)[CH2:36][C@H:35]2[C@@H:33]1[CH2:34]2.N(C(OC(C)C)=O)=NC(OC(C)C)=O>C1(C)C=CC=CC=1.CO>[O:25]=[C:23]1[C:22]2[C:21](=[CH:29][CH:28]=[CH:27][CH:26]=2)[C:20](=[O:30])[N:24]1[C@H:36]1[C@@H:37]([NH:38][C:39](=[O:48])[O:40][CH2:41][C:42]2[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=2)[CH2:32][C@H:33]2[C@@H:35]1[CH2:34]2参加物
反応物 4
生成物 1
試薬・触媒・溶媒 2
反応条件
- 温度
- -78 °C
実験手順
A solution of triphenylphosphine (6.4 g, 24.292 mmol), phthalimide (6.2 g, 42.511 mmol) and benzyl (1S,2S,3S,5S)-2-hydroxybicyclo[3.1.0]hexan-3-ylcarbamate (3.0 g, 12.146 mmol) in toluene (250 mL) was stirred at −78° C. for 30 minutes under nitrogen protection, followed by the addition of diisopropyl azodicarboxylate (8.6 mL, 42.511 mmol) dropwise. The resulting mixture was stirred at −78° C. for another 1 hour and then at room temperature overnight. The reaction mixture was treated with 10 mL of methanol, and the solvents were removed under reduced pressure. The crude material was purified by silica gel column chromatography (ethyl acetate:petroleum ether=1:2) to afford the title compound (3.0 g, 65%) as a light yellow oil. MS (ES+) C22H20N2O4 requires: 376, found: 399 [M+23]+.
後処理
- customat room temperature
- customovernight
- customthe solvents were removed under reduced pressure
- customThe crude material was purified by silica gel column chromatography (ethyl acetate:petroleum ether=1:2)
出典と根拠
- ORDレコード
- ord-327c189a18d6473b9afbef0a700fc133
- 出典データセット
- uspto-grants-2016_09
- 特許番号
- US09434700B2
反応ノート
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