反应详情

A solution of 3-bromo-4-fluorobenzyl methanesulfonate (Intermediate 14, 330 mg; 1.17 mmol) and 2,6-lutidine (176 μL; 1.52 mmol) in methanol (4 mL) was stirred for 16 hours at RT. Additional aliquots of 2,6-lutidine (176 μL; 1.52 mmol each) were added once a day for a total of three days, during which stirring was continued at RT. The mixture was taken up in Et2O, washed with water, HCl (0.1N in water) and brine. The organic phase was dried over MgSO4, filtered and concentrated with moderate vacuum and without heating affording the title compound as a pale yellow liquid.

1. customwas continued at RT
2. washwashed with water, HCl (0.1N in water) and brine
3. dry with materialThe organic phase was dried over MgSO4
4. filtrationfiltered
5. concentrationconcentrated with moderate vacuum
6. temperaturewithout heating