Pyridine → tert-Butyl N-[(1S)-1-(4-{2-[(2R)-2-methylbut-3-enamido]phenyl}pyridin-2-yl)but-3-en-1-yl]carbamate

HRID 1481289ノート

反応式

HRID 1481289 の反応式
[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[CH:13]=[CH:12][N:11]=[C:10]([C@@H:14]([NH:18][C:19](=[O:25])[O:20][C:21]([CH3:24])([CH3:23])[CH3:22])[CH2:15][CH:16]=[CH2:17])[CH:9]=1.[CH3:26][C@H:27]([CH:31]=[CH2:32])[C:28](O)=[O:29].N1C=CC=CC=1>CCOC(C)=O>[CH3:26][C@H:27]([CH:31]=[CH2:32])[C:28]([NH:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[CH:13]=[CH:12][N:11]=[C:10]([C@@H:14]([NH:18][C:19](=[O:25])[O:20][C:21]([CH3:24])([CH3:23])[CH3:22])[CH2:15][CH:16]=[CH2:17])[CH:9]=1)=[O:29]

参加物

5

反応物 3

HCID 1049PyridineHCID 55299080(R)-2-methylbut-3-enoic acidHCID 68079321tert-Butyl N-[(1S)-1-[4-(2-aminophenyl)pyridin-2-yl]but-3-en-1-yl]carbamate

生成物 1

HCID 126739818tert-Butyl N-[(1S)-1-(4-{2-[(2R)-2-methylbut-3-enamido]phenyl}pyridin-2-yl)but-3-en-1-yl]carbamate収率 85%

試薬・触媒・溶媒 1

HCID 8857Ethyl Acetate溶媒

実験手順

To a solution of 45D (1.4 g, 4.12 mmol), (R)-2-methylbut-3-enoic acid (0.58 g, 5.79 mmol) in EtOAc (41.2 ml) was added pyridine (1.001 ml, 12.37 mmol). The reaction was cooled down to 0° C. under Ar and propane phosphonic acid anhydride (4.91 ml, 8.25 mmol) was added dropwise. The reaction was then gradually warmed up to rt over night. The reaction mixture was diluted and washed with sat. aq. NaHCO3, aqueous layer back-extracted with EtOAc, combined EtOAc phase washed with brine, dried over MgSO4, filtered, concentrated. The residue was purified by silica gel chromatography to give the desired product (1.47 g, 85%) as an off white foam. 1H NMR (500 MHz, CHLOROFORM-d) δ 8.65-8.60 (m, 1H), 8.19 (d, J=8.3 Hz, 1H), 7.47-7.36 (m, 2H), 7.24-7.18 (m, 3H), 7.16 (dd, J=5.0, 1.4 Hz, 1H), 5.82-5.62 (m, 3H), 5.10-5.01 (m, 4H), 4.86 (d, J=7.2 Hz, 1H), 3.03 (quin, J=7.2 Hz, 1H), 2.62 (tq, J=14.1, 6.9 Hz, 2H), 1.49-1.36 (m, 9H), 1.25 (d, J=7.2 Hz, 3H). MS (ESI) m/z: 422.1 (M+H)+.

後処理

  1. additionwas added dropwise
  2. additionThe reaction mixture was diluted
  3. washwashed with sat. aq. NaHCO3, aqueous layer
  4. extractionback-extracted with EtOAc, combined EtOAc phase
  5. washwashed with brine
  6. dry with materialdried over MgSO4
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customThe residue was purified by silica gel chromatography

出典と根拠

ORDレコード
ord-4d4d23a5c367445aa01765f32f1211e3
出典データセット
uspto-grants-2016_08
特許番号
US09409908B2

反応ノート

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