反应详情

1-iso-Propyl-5-aminomethylisoquinoline (8.7 g) was dissolved in 20 ml of acetic acid and 20 ml of water, and with ice cooling, 9 g of sodium nitrite was added. The mixture was stirred for 30 minutes. Then, 30 ml of a 10 N aqueous solution of sodium hydroxide was added, and the mixture was heated for 1 hour. The product was extracted with ethyl acetate, washed in water, and dried, followed by distilling off the solvent. Recrystallization of the residue from methylene chloride/n-hexane afforded 7.1 g of 1-isopropyl-5-hydroxymethylisoquinoline as colorless needles having a melting point of 119.9° to 120.9° C.

1. temperaturethe mixture was heated for 1 hour
2. extractionThe product was extracted with ethyl acetate
3. washwashed in water
4. customdried
5. distillationby distilling off the solvent
6. customRecrystallization of the residue from methylene chloride/n-hexane