反应详情

To a boiling solution of 1.51 g (5 mmol) of (28) in ethanol (40 mL), a solution of 285 mg (7,5 mmol) of NaBH4 in 5 mL of water was added dropwise. Boiling was continued for 5 min, the solution was cooled, diluted with water, and extracted with ether. The ether extract was washed with water, dried, and the solvent was removed at reduced pressure to provide (29) as a colorless oil. This soldified on trituration with a few drops of ether to yield (29), m.p. 65°-66° C.

1. temperaturethe solution was cooled
2. extractionextracted with ether
3. extractionThe ether extract
4. washwas washed with water
5. customdried
6. customthe solvent was removed at reduced pressure