Hydrochloric Acid → 4'-(2-Amino-1-hydroxyethyl)methanesulfonanilide

Participants

Reaction Steps

4'-(2-Dibenzylaminoacetyl)methanesulfonanilide (XXVI) (32.7 g) and Pd/C catalyst (1.5 g) were combined in MeOH (200 ml), H2O (25 ml), and concentrated HCl (6.6 ml) and shaken for 24 hours at 35° C. and 3 atmospheres pressure of hydrogen gas in a Parr hydrogenator, by which time three equivalents of hydrogen had been consumed. The catalyst was filtered off and the filtrate was evaporated to a white solid, which was recrystallized twice from 2-PrOH/H2O. This yielded 4.3 g of Compound (XXV).HCl, m.p. 178°-180°, whose elemental analysis for C, H, and N, NMR, and mass spectra were consistent with the indicated structure.

Provenance & Evidence