Triphenylphosphine → 2-Methyl-2-{[1-(3-phenyl-butoxy)-naphthalene-2-carbonyl]-amino}-propionic acid methyl ester

Participants

Reaction Steps

At 0° C. to a solution of 80 mg of 2-[(1-hydroxy-naphthalene-2-carbonyl)-amino]-2-methyl-propionic acid methyl ester, 42 mg 3-phenyl-1-butanol and 73 mg triphenyl phosphine in 3 ml of dry THF 56 mg of diisopropylazodicarboxylate were added. After 2 h and again after 4 h at room temperature 36 mg of triphenylphosphine and 25 mg of diisopropylazodicarboxylate were added. After additional 12 h the reaction was concentrated in vacuo and after chromatography on silica (ethyl acetate/heptane) 110 mg of 2-methyl-2-{[1-(3-phenyl-butoxy)-naphthalene-2-carbonyl]-amino}-propionic acid methyl ester were obtained.

Provenance & Evidence