Penicillamine → 75323-55-6

Participants

Reaction Steps

D-Penicillamine (5)(140 9: 938 mmol) and sodium hydroxide (43 g; 938 mmol) were dissolved in a mixture of oxygen-free water (670 ml) and oxygen-free isopropanol (830 ml) at 0° C. To the resultant solution, benzyl bromide (208.6 g; 1219 mmol) was dropwise added, and the mixture was stirred at room temperature overnight. The reaction mixture was made neutral with 2N aqueous sodium hydroxide, stirred at -20° C. to precipitate crystals, which were collected by filtration to give Compound (6) (157.3 g; yield 70%).

Provenance & Evidence