反应详情

Sodium borohydride (15.2 g) was added to a solution of 3-hydroxybenzaldehyde (48.8 g) and pyrrolidine (66.4 ml) in ethanol. After 18 hours the ethanol was removed and the residual oil was acidified with hydrochloric acid and washed with ethyl acetate. The aqueous solution was then basified with ammonia and extracted with ethyl acetate. Evaporation of the organic extracts yielded the title compound as an off-white solid (21.4 g), m.p. 100°-102°. TLC Silica; methanol; 0.88 ammonia (80:1)Rf 0.48.

1. customAfter 18 hours the ethanol was removed
2. washwashed with ethyl acetate
3. extractionextracted with ethyl acetate
4. customEvaporation of the organic extracts