反应详情

A solution of intermediate (24) (0.0032 mol) in methanol (dry) (2 ml) and THF (dry) (16 ml) was stirred at 0° C. NaBH4 (0.0128 mol) was added portionwise at 0° C. The reaction mixture was stirred for 5 hours at room temperature. A 10% NH4Cl solution was added and this mixture was extracted with DCM. The separated organic layer was dried, filtered and the solvent evaporated, yielding 0.45 g of 2H-pyrano[3,2-b]pyridine-3-methanol (intermediate 25).

1. extractionthis mixture was extracted with DCM
2. customThe separated organic layer was dried
3. filtrationfiltered
4. customthe solvent evaporated