Ingo Zahn, K. Polborn, W. Beck
Jul 23, 1991
Citations
0
Influential Citations
6
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Glycine ethylester is added to the coordinated olefin of [Cp(OC)2Fe(olefin)]+ to give the complexes [Cp(OC)2FeCH2CH(R)NH2CH2CO2Et]+ BF4− (1. The reaction of α-amino acid esters with (1,5-hexadiene)PtCl2 affords the compounds Cl2PtH2C=CHCH2CH2CHCH2NH2CHR2CO2R1 (2) which are converted with Na2CO3 to the dimeric complexes [ClPtH2C=CHCH2CH2CHCH2NH2CHR2CO2R1)]2 (3). The X-ray structural determination of 3a confirms earlier observations by Paiaro et al. that dimerization occurs stereoselectively. Hydrogenation (Pd/C) of 3 yields the corresponding N-alkyl α-amino acid esters. Abstraction of cloride from 3a leads to the dimeric dicationic complex 4 in which the ester groups are coordinated to the platinum atoms.