反应详情

温度

0 °C

2-(3-Methoxymethyl-piperazine-1yl)-3-naphthalen2-yl-propionic acid methyl ester, 62, (2.2 g, 6.4 mmol) and N-Boc-(4-flouro)phenylalanine (1.9 g, 6.8 mmol) and O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (4.9 g, 12.9 mmol) are dissolved in anhydrous DMF (20 mL). This reaction mixture is cooled to 0° C. then N-methylmorpholine (0.75 mL, 6.8 mmol) is added. This reaction mixture is placed in a refrigerator overnight. EtOAc (75 mL) and water (300 mL) are added, and the organic layer is separated. The aqueous layer is extracted with EtOAc (3×150 mL). All organic layers are combined and washed with water (100 mL), and dried over Na2SO4. The solution is concentrated in vacuo and the residue purified over silica (EtOAc/Hexane, 1:1) to afford 3.6 g (92% yield) of the desired product. 1H NMR (CDCl3, δ): 7.72–7.58 (m, 3H), 7.44 (s, 1H), 7.40–7.22 (m, 2H), 7.15 (d, J=8.2 Hz, 1H), 7.10–6.98 (m, 2H), 6.82 (t, J=8.2 Hz, 2H), 5.88–5.64 (m, 1H), 4.82–4.50 (m, 1.5H), 4.18 (d, J=12.3 Hz, 0.5H), 3.58–3.44 (m, 3H), 3.42–3.30 (m, 1.5H), 3.08–3.72 (m, 10H), 2.68–2.45 (m, 2H), 2.40–2.18 (m, 1H), 1.70 (d, J=12.3 Hz, 0.5H), 1.35–1.25 (m, 1H), 1.30 (s, 9H); 13C NMR, δ 171.8, 171.4, 170.4, 163.9, 160.2, 153.0, 152.8, 136.0, 133.6, 132.6, 132.3, 131.4, 127.9, 127.7, 127.5, 126.2, 125.6, 115.5, 115.2, 115.1, 115.0, 79.5, 79.2, 69.6, 68.9, 68.3, 68.1, 60.3, 58.6, 58.3, 53.7, 52.0, 51.2, 48.8, 46.5, 45.6, 42.3, 40.0, 38.7, 35.3, 28.4.

1. customis placed in a refrigerator overnight
2. customthe organic layer is separated
3. extractionThe aqueous layer is extracted with EtOAc (3×150 mL)
4. washwashed with water (100 mL)
5. dry with materialdried over Na2SO4
6. concentrationThe solution is concentrated in vacuo
7. customthe residue purified over silica (EtOAc/Hexane, 1:1)