THE (ETA(5)-CYCLOPENTADIENYL)FE(CO)(2) COMPLEX OF THE (L)-TRYPTOPHAN AND (D)-TRYPTOPHAN METHYL-ESTER N-ANION - SYNTHESIS AND ACYLATION OF THE AMINO FUNCTION

The photochemical reaction of (eta(5)-C5H5)Fe(CO)(2)I with (L)- and (D )-tryptophan methyl ester in the presence of diisopropylamine in benze ne leads to complexation of the (eta(5)-C5H5)Fe(CO)(2) moiety to the d eprotonated indole nitrogen. This reaction takes place without detecta ble (< 1%) racemization at C-alpha. The amino group of the complex for med was acylated by treatment with p-chlorobenzoic acid and Fmoc-(L)-l eucine in the presence of dicyclohexylcarbodiimide.