Direct Addition of Alcohols to Organonitriles Activated by Ligation to a Platinum(IV) Center
作者:Nadezhda A. Bokach、Vadim Yu. Kukushkin、Maxim L. Kuznetsov、Dmitrii A. Garnovskii、Giovanni Natile、Armando J. L. Pombeiro
DOI:10.1021/ic011025h
日期:2002.4.1
effect. X-raystructure determinations were performed for trans-[PtCl(4)[(E)-NH=C(Me)OEt](2)] (2), trans-[PtCl(4)[(E)-NH=C(Et)OEt](2)] (10), trans-[PtCl(4)[(E)-NH=C(Et)OPr-i](2)] (11), trans-[PtCl(4)[(E)-NH=C(Et)OPr-n](2)] (12), and cis-[PtCl(4)[(E)-NH=C(Et)OMe](2)] (14). Ab initio calculations have shown that the EE isomers are the most stable ones for both platinum(II) and platinum(IV) complexes, whereas
Pop-the-Cork Strategy in Synthetic Utilization of Imines: Stabilization by Complexation and Activation via Liberation of the Ligated Species
作者:Nadezhda A. Bokach、Vadim Yu. Kukushkin、Matti Haukka、João J. R. Fraústo da Silva、Armando J. L. Pombeiro
DOI:10.1021/ic034086j
日期:2003.6.1
allowed the isolation of trans-[PtCl(4)[E-NH[double bond]C(R)OEt](2)]. The latter were reduced selectively, by the ylide Ph(3)P[double bond]CHCO(2)Me, to trans-[PtCl(2)[E-NH[double bond]C(R)OEt](2)]. The complexed imino esters NH[double bond]C(R)OEt were liberated from the platinum(II) complexes by reaction with 2 equiv of 1,2-bis(diphenylphosphino)ethane (dppe) in chloroform; the cationic complex [Pt(dppe)(2)]Cl(2)