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1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → (S)-1-Phenylethyl 2-bromo-2-phenylacetate
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | 1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide | HCID 15908 | — |
| 反応物 | Bromo(phenyl)acetic acid | HCID 97919 | — |
| 反応物 | 1-Phenylethanol, (S)- | HCID 443135 | — |
| 触媒 | 4-(Dimethylamino)pyridine | HCID 14284 | — |
| 溶媒 | Dichloromethane | HCID 6344 | — |
| 溶媒 | Ethyl Acetate | HCID 8857 | — |
| 生成物 | (S)-1-Phenylethyl 2-bromo-2-phenylacetate | HCID 59166394 | 73% |
反応手順
To a mixture of α-bromophenylacetic acid (10.75 g, 0.050 mol), (S)-(−)-1-phenylethanol (7.94 g, 0.065 mol) and DMAP (0.61 g, 5.0 mmol) in dry dichloromethane (100 mL) was added solid EDCI (12.46 g, 0.065 mol) all at once. The resulting solution was stirred at room temperature under Ar for 18 hours and then it was diluted with ethyl acetate, washed (H2O×2, brine), dried (Na2SO4), filtered, and concentrated to give a pale yellow oil. Flash chromatography (SiO2/hexane-ethyl acetate, 4:1) of this oil provided the title compound (11.64 g, 73%) as a white solid. 1H NMR (400 MHz, CDCl3) δ 7.53-7.17 (m, 10H), 5.95 (q, J=6.6 Hz, 0.5H), 5.94 (q, J=6.6 Hz, 0.5H), 5.41 (s, 0.5H), 5.39 (s, 0.5H), 1.58 (d, J=6.6 Hz, 1.5H), 1.51 (d, J=6.6 Hz, 1.5H).
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US07741347B2 |
| 出典データセット | uspto-grants-2010_06 |
| ORD ID | ord-b03116b13a2d425b88217b10ab981f45 |
| 出典メモ | uspto-grants-2010_06 |