2-Bromoethanol → HCID 86684665、化合物

HRID 1504357ノート

反応式

HRID 1504357 の反応式
[Br:1][CH2:2][CH2:3][OH:4].C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[NH:24]([C:38]([O:40][C:41]([CH3:44])([CH3:43])[CH3:42])=[O:39])[C@H:25]([C:34]([O:36][CH3:37])=[O:35])[CH2:26][C:27]1[CH:32]=[CH:31][C:30](O)=[CH:29][CH:28]=1.CCOC(/N=N/C(OCC)=O)=O>C1COCC1>[Br:1][CH2:2][CH2:3][O:4][C:30]1[CH:29]=[CH:28][C:27]([CH2:26][C@H:25]([NH:24][C:38]([O:40][C:41]([CH3:44])([CH3:43])[CH3:42])=[O:39])[C:34]([O:36][CH3:37])=[O:35])=[CH:32][CH:31]=1

参加物

6

反応物 4

HCID 108982-BromoethanolHCID 11776TriphenylphosphineHCID 5462977Diethyl azodicarboxylateHCID 7019130Boc-Tyr-OMe

生成物 1

HCID 86684665HCID 86684665、化合物収率 50%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

反応条件

温度
0 °C

実験手順

2-Bromo-ethanol (0.61 mL, 8.03 mmol), followed by PPh3 (3.16 g, 12.05 mmol) was added to a solution of Boc-Tyr-OMe (2.85 g, 9.64 mmol) in anhydrous THF (50 mL). The mixture was cooled to 0° C. and DEAD (5.5 mL of 40% wt solution in toluene, 12.05 mmol) was added. The mixture was allowed to warm at room temperature and was stirred overnight. After the reaction was finished, the solvent was evaporated and the residue dissolved in EtOAc (100 mL) was washed with NaOH (0.1 M, 2×50 mL), followed by brine. The organic phase was dried over Na2SO4 and evaporated. The crude product was purified by flash column chromatography (SiO2, step-wise gradient from 2-40% EtOAc in Hexanes) to give 1A (1.61 g, 50%) as a white solid. 1H NMR (600 MHz, CDCl3): δ 7.04 (2H, d, J=8.4 Hz), 6.84 (2H, d, J=8.4 Hz), 4.96 (1H, d, J=7.8 Hz), 4.51-4.58 (1H, m), 4.27 (2H, t, J=6.6 Hz), 3.71 (3H, s), 3.62 (2H, t, J=6.6 Hz), 3.06 (1H, dd, J=13.8, 5.4 Hz), 3.00 (1H, dd, J=13.8, 5.4 Hz), 1.42 (9H, s); 13C NMR (150 MHz, CDCl3): δ 172.3, 157.2, 155.1, 130.4, 128.8, 114.8, 79.9, 67.9, 54.5, 52.2, 37.5, 29.1, 28.3; MS (ESI, m/z): 424 (M+Na)+.

後処理

  1. temperatureto warm at room temperature
  2. customthe solvent was evaporated
  3. dissolutionthe residue dissolved in EtOAc (100 mL)
  4. washwas washed with NaOH (0.1 M, 2×50 mL)
  5. dry with materialThe organic phase was dried over Na2SO4
  6. customevaporated
  7. customThe crude product was purified by flash column chromatography (SiO2, step-wise gradient from 2-40% EtOAc in Hexanes)

出典と根拠

ORDレコード
ord-de0c5e1355c9413b8ea25cf6b6621de1
出典データセット
uspto-grants-2015_12
特許番号
US09212381B2

反応ノート

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