Dimethylformamide → HCID 22341383, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred mixture of DMF (100 mL) and THF (100 mL), was added solid potassium tert-butoxide (17.96 g, 0.16 mol). After all of the solid had dissolved, the solution was cooled to ≦5° C. and 3-hydroxypyridine (14.25 g, 0.15 mol) was added all at once. After stirring for 10 minutes, the mixture was cooled to −10° C. and SEM-Cl, 25 g, 0.15 mol) was added dropwise at such a rate that the internal temperature remained at ≦−5° C. After the addition was complete, the mixture was stirred at 0° C. for 1 hour, then at room temperature for 2 hours. The mixture was poured into water (600 mL), then extracted with ether (3×150 mL). The ether extracts were combined, washed sequentially with 2N NaOH (100 mL), water (50 mL), and saturated NaCl solution (100 mL), dried (MgSO4) and concentrated to give a brown liquid. Distillation gave the desired ether 9 as a colorless liquid (20.8 g), b.p. 95-99° C. @ 0.03 mm Hg.

Provenance & Evidence