Rfw. Jackson et al., DIRECT SYNTHESIS OF METAL-COMPLEXED AROMATIC AMINO-ACID DERIVATIVES BY PALLADIUM-CATALYZED COUPLING PROCESSES, Synlett, (9), 1996, pp. 862
Palladium(O) catalysed coupling of the serine-derived organozinc reage
nt 3 with 1-iodoferrocene and 1,1'-diiodofenocene gave the correspondi
ng protected ferrocenylalanine and 1,1'-ferrocenylbis(alanine) derivat
ives 6 and 8, respectively. Analogous coupling of (haloarene)tricarbon
ylchromium complexes with zinc reagent 3, and subsequent decomplexatio
n, gave phenylalanine derivatives 11, including the 2-fluorophenylalan
ine derivative 11b.