Klaus Bartel

Metallkomplexe mit mehrfunktionellen isocyaniden : II. Ein metallorganisches nitrilylid: [3+2]-cycloadditionen an [{(C6H5)3P}2Pt(Cl)CNCH2CO2C2H5]BF4☆

Abstract Various heterocyclic carbene and carbanion complexes of platinum(II) containing C(2)-bonded oxazolines (oxazolidinylidenes), oxazoles, pyrrolines, pyrroles, and imidazoles (imidazolinylidenes) are readily prepared in high yields by reaction of [{(C 6 H 5 ) 3 P} 2 Pt(Cl)CNCH 2 CO 2 C 2 H 5 ]BF 4 with the respective 1,3-dipolarophiles.

Dimethylgold(III) complexes of α-amino acids and related ligands

Abstract Dimenthylgold(III) complexes with the anions of glycine, alanine, valine, cysteine, histidine and imidazole, benzimidazole and 1,2,4-triazole, respectively, have been prepared. The structures of the complexes are discussed on the basis of their infrared spectra.

Pseudohalogenometallverbindungen: LVIII. Reaktionen von diphenylphosphorylazid und perfluor-n-hexylsulfonylazid mit triphenylphosphan-komplexen von platin(0), rhodium(I), iridium(I), ruthenium(0), kobalt(II) und kupfer(I)

Abstract Diphenylphosphorylazide N 3 P(O)(OPh) 2 reacts with Pt(PPh 3 ) 3 , Pt(PPh 3 ) 2 (C 2 H 4 ), trans -RhCl(CO)(PPh 3 ) 2 , Ru(CO) 3 (PPh 3 ) 2 , CoCl 2 (PPh 3 ) 2 and CuCl(PPh 3 ) 2 to give the azido complexes Pt(PPh 3 ) 2 (N 3 )R, Pt(PPh 3 ) 2 (N 3 ) 2 R 2 , the urylene complex RhCl(PPh 3 ) 2 (RNCONR) and the phosphine imine complexes Ru(CO) 3 (RPPh 3 ) 2 , CoCl 2 (RNPPh 3 ) 2 , CuCl(RNPPh 3 ) 2 , respectively, (RP(O)(OPh) 2 ). The oxidative addition of n-C 6 F 13 SO 2 N 3 to Pt(PPh 3 ) 4 and Pt(PPh 3 ) 2 (C 2 H 4 ) affords the complexes Pt(PPh 3 ) 2 (N 3 )R and Pt(PPh 3 ) 2 (N 3 ) 2 R 2 , respectively, (RSO 2 C 6 F 13 . The compounds are characterized by elemental analysis and by their IR spectra.

Metallkomplexe funktioneller Isoeyanide, VI [1] Tosylmethyl-, Benzyl- und Benzhydrylisocyanid-Metallverbindungen und ihre Reaktionen mit Nucleophilen und 1.3-Dipolarophilen/Metal Complexes of Functional Isocyanides, VI [1] Tosylmethyl-, Benzyl- and Benzhydrylisocyanide Metal Complexes and Their Reactions with Nucleophiles and 1,3-Dipolarophiles

Abstract Metal complexes of the type M(CO)5L (M = Cr, W), MX2L2 (M = Pd, Pt; X = Cl, Br, I), PtCl2(L)PPh3, and [Pt(Cl)(L)(PPh3)2]BF4 have been prepared with L = CNCH2SO2C6H4-pCH3, CNCH2Ph, and CNCHPh2, and reacted with a variety of nucleophiles (NH2CH2CO2CH3, CH(CN)2-, CH(CN)CO2CH3-, OH-) and 1,3-dipolarophiles (CF3CN, CH3O2CC ≡CCO2CH3, CH2 = CHCN, RNCO (R = CH3, Ph), RCHO (R = i-C3H7, Ph, C6H4-oOH)) to give carbene, α-aminovinyl, and carboxamido complexes, and C2-metallated heterocycles (imidazoles, pyrroles, oxazolos, oxazolines), respectively. Ready dealkylation occurs of benzhydryl isoeyanide in [Pt(Cl)(CNCHPh2)(PPh3)2]BF4.

Reaktionen an koordinierten isocyaniden : I. Addition von ch-aciden verbindungen an kationischeisonitrilkomplexe: synthese von α-metallierten enaminen

Zusammenfassung Active methylene groups in compounds such as malodinitrile, methyl cyanoacetate, and ethyl acetylacetate add under mild conditions to various isocyanides coordinated to palladium(II) and platinum(II) togive C- monohapto -vinyl complexes of the type L MC(NHR′)C 2 R 3 .