217968-04-2Relevant articles and documents
Metal complexes of alkyne-bridged α-amino acids
Kayser, Bernd,Altman, Janina,Noeth, Heinrich,Knizek, Joerg,Beck, Wolfgang
, p. 1791 - 1798 (1998)
The palladium-mediated coupling of p-ethynylphenylalanine (p-epa) with different halogenated benzenes yielded alkyne-bridged α-amino acids. A series of cationic mono- to hexanuclear (Ph3P)2Pt complexes with the anions of p-ethynylphenylalanine and alkynyl- or benzene-bridged di-, tri-, tetra- and hexa-ethynyl phenylalanines as N,O-chelate ligands was prepared. N-t-Boc-p-ethynylphenylalanine methyl ester was metal-substituted to give complexes of the types Ph3PAu-C≡C-R and (Et3P)2Pt-(C≡CR)2. The benzene-bridged di-, tri-, tetra- and hexa-p-ethynylphenylalanine methyl esters form Schiff bases with ferrocene aldehyde and a tripodal ligand was obtained from. Ph2PCH2CH2CH2NH2 and the benzene-bridged triethynylphenyl-alanine. The structure of (Ph3P)2Pt[NH2C(H)-(CH2C 6H4C≡CH)CO2]+ BF4- was determined by X-ray diffraction.