反应详情

温度

78 °C

To a solution of (R)-2-amino-3-benzyloxy-1-propanol (698.4 g, 3.931 mol) in EtOH (3.6 L) was added Et3N (1.27 L, 9.11 mol) in portions over 10 min. Then a solution of 2-chloro-6-methoxy-3-nitropyridine (672.7 g, 3.567 mol) in EtOH (0.6 L) was added in portions over 10 min. The mixture was heated at 78° C. for 2 h. The reaction mixture was cooled to room temperature and added to stirred ice/H2O (8.4 L). The mixture was extracted with EtOAc (9+6+3 L). The extracts were washed with brine (6 L), dried over MgSO4 (˜900 g), filtered and evaporated to give (2R)-2-{[6-(methyloxy)-3-nitro-2-pyridinyl]amino}-3-[(phenylmethyl)oxy]-1-propanol (1373.1 g, 115%) as an orange oil.

1. temperatureThe reaction mixture was cooled to room temperature
2. additionadded
3. extractionThe mixture was extracted with EtOAc (9+6+3 L)
4. washThe extracts were washed with brine (6 L)
5. dry with materialdried over MgSO4 (˜900 g)
6. filtrationfiltered
7. customevaporated