反应详情

To the product of Example 116A (21.6 g, 144 mmol), the product of Example 116B (29.1 g, 166 mmol), 1H-benzo[d][1,2,3]triazol-1-ol hydrate (27.6 g, 180 mmol), N1-((ethylimino)methylene)-N3,N3-dimethylpropane-1,3-diamine hydrochloride (34.6 g, 180 mmol) and 4-methylmorpholine (63.5 mL, 578 mmol) was dissolved in dichloromethane (960 mL) and stirred at room temperature for 18 hrs. The resultant solution was then concentrated to a residue, water was then added and the solution extracted with a 25% isopropanol in chloroform solution (2×2000 mL) the organic layer washed with brine then the organic extract dried over MgSO4, then concentrated to a yellow oil which was purified by column chromatography eluting with a gradient of 0-10% methanol in dichloromethane to provide 25 g (64%) of the title compound as a colorless solid. 1H NMR (400 MHz, DMSO-d6) δ 7.28 (m, 2H), 6.81 (s, 1H), 4.24 (dd, J=8.1, 4.4 Hz, 1H), 4.00 (t, J=8.4 Hz, 1H), 3.75 (m, 1H), 3.55 (m, 1H), 3.50 (s, 3H), 2.02 (m, 1H), 1.97 (m, 2H), 1.80 (m, 2H), 0.92 (d, J=6.7 Hz, 3H), 0.86 (d, J=8.6 Hz, 3H).

1. concentrationThe resultant solution was then concentrated to a residue, water
2. additionwas then added
3. extractionthe solution extracted with a 25% isopropanol in chloroform solution (2×2000 mL) the organic layer
4. washwashed with brine
5. extractionthe organic extract
6. dry with materialdried over MgSO4
7. concentrationconcentrated to a yellow oil which
8. customwas purified by column chromatography
9. washeluting with a gradient of 0-10% methanol in dichloromethane