Hydrochloric Acid → 3-(Aminomethyl)phenol hydrochloride

To a solution of 3-cyanophenol (30 g, 0.252 mol) in ethanol (150 mL) at 25° C. under an atmosphere of nitrogen, was added 10% palladium on carbon (3 g) ) followed by concentrated hydrochloric acid solution (23 mL, 0.277 mol). The reaction mixture was hydrogenated at 50 psi in a Parr apparatus for 2.5 h and was then filtered over Celite® and washed well with ethanol (100 mL). The solvents were concentrated under reduced pressure and the resulting solid was placed under vacuum for 1 h. The solid was dissolved in 150 mL of hot ethanol, filtered and crystallized by adding diethyl ether. The solids were collected by filtration, washed well with diethyl ether and dried under vacuum 24 h to give 3-hydroxybenzylamine hydrochloride (28.88 g, 71% yield) as a colorless solid.

1. filtrationwas then filtered over Celite®
2. washwashed well with ethanol (100 mL)
3. concentrationThe solvents were concentrated under reduced pressure
4. waitthe resulting solid was placed under vacuum for 1 h
5. dissolutionThe solid was dissolved in 150 mL of hot ethanol
6. filtrationfiltered
7. customcrystallized
8. additionby adding diethyl ether
9. filtrationThe solids were collected by filtration
10. washwashed well with diethyl ether
11. customdried under vacuum 24 h

ORD record

ord-4e965a2cb2654868857a0a4434e7c2ad

Source dataset

uspto-grants-2003_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06515124B2