Triethylamine → (R)-2-(5-Phenyl-benzofuran-2-ylmethoxycarbonylamino)-3-phenylpropionic Acid Methyl Ester

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A mixture of 2-hydroxmethyl-5-phenyl-benzofuran 17 (1.20 g, 5.85 mmole), (R)-2-isocyanato-3-phenyl-propionic acid methyl ester 5 (1.2 g, 5.9 mmole), triethylamine (1.7 ml), and THF (30 ml) was heated to 50° C. under a nitrogen atmosphere for 6 hrs. The solvent was removed under reduced pressure and the residue was purified by chromatography giving about 1.6 g of (R)-2-(phenyl-benzofuran-2-ylmethoxycarbonylamino)-3-phenyl-propionic acid methyl ester 18, mp. 85–86° C.

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