Triphenylphosphine → [Rac]-2-ethoxy-3-{3-fluoro-4-[3-(2-phenyl-thiazol-4-yl)-propoxy]-phenyl}-propionic acid ethyl ester

Beteiligte Stoffe

Reaktionsschritte

In analogy to the procedure described in example 1 d], [rac]-2-ethoxy-3-(3-fluoro-4-hydroxy-phenyl)-propionic acid ethyl ester (example 7 a]) was reacted with 3-(2-phenyl-thiazol-4-yl)-propan-1-ol in tetrahydrofuran in the presence of triphenylphosphine and DEAD (diethyl azodicarboxylate) to yield [rac]-2-ethoxy-3-{3-fluoro-4-[3-(2-phenyl-thiazol-4-yl)-propoxy]-phenyl}-propionic acid ethyl ester, which was further saponified in analogy to the procedure described in example 4 e], to yield [rac]-2-ethoxy-3-{3-fluoro-4-[3-(2-phenyl-thiazol-4-yl)-propoxy]-phenyl}-propionic acid as a colorless gum.

Herkunft & Nachweise