Triphenylphosphine → HCID 18341549, compound

Participants

Reaction Conditions

Reaction Steps

(R)-2-[N′-Benzyl-N′-(2-hydroxyethyl)amino]-1-[3-(N-benzyl-N-methylsulfonylamino)phenyl]ethanol (173 mg; synthesized according to the process described in WO 01/04092) and triphenylphosphine (103 mg) were dissolved in dehydrated methylene chloride (5 mL), followed by stirring at −20° C. N-Bromosuccinimide (69.9 mg) was added at a stretch and the resulting mixture was stirred for 10 minutes. The reaction mixture was purified by silica gel column chromatography (5:1-3:1 hexane/ethyl acetate) to yield (R)-2-[N′-benzyl-N′-(2-bromoethyl)amino]-1-[3-(N-benzyl-N-methylsulfonylamino)phenyl]ethanol. This was immediately dissolved in acetonitrile (2.5 mL). The compound (79.8 mg; obtained in the above step B) and an aqueous 1 N sodium hydroxide solution (392 μL) were added, followed by stirring at room temperature for 14 hours. The reaction mixture was concentrated and the residue was purified by silica gel column chromatography (4:1-2:1 hexane/ethyl acetate) to yield the title compound (132.2 mg).

Provenance & Evidence