Palladium(II) complexes with the new P,N-type ligand (2-oxazoline-2-ylmethyl)di-isopropylphosphine as intermediates in CO/ethylene or CO/methyl acrylate insertion
作者： Magno Agostinho , Pierre Braunstein
DOI: 10.1016/J.CRCI.2007.02.005
关键词: Medicinal chemistry 、 Alkyl 、 Crystal structure 、 Chemical synthesis 、 Ethylene 、 Palladium 、 Ligand 、 Methyl acrylate 、 Chemistry 、 Stereochemistry 、 Oxazoline 、 General chemistry 、 General Chemical Engineering
摘要: Abstract The ligand (i-Pr)2PCH2(oxazoline) (1a), of the P,N-donor type, was reacted with [PdMeCl(COD)] to yield square planar methylpalladium(II) complex [PdClMe(P,N)] (P,N = 1a) (2a), from which [PdMe(P,N)OTf] (OTf = OSO2CF3) (3a) obtained by AgOTf-promoted chloride abstraction. alkyl complexes (5a, R = H; 7a, R = C(O)OMe) have been isolated initial CO/ethylene or CO/methyl acrylate insertion steps into Pd–Me bond 3a, respectively, and spectroscopically characterized. Complexes 2a, 3a 7a fully characterized single crystal X-ray diffraction. Complex is still a rare example structurally stepwise product. These are relevant alternating copolymerization olefins carbon monoxide catalyzed palladium complexes. In addition, centrosymmetric dinuclear trans-[Pd(μ-Cl){(i-Pr)2PCH2(oxazoline)}]2(OTf)2 (6) has diffraction; it appears be first type [Pd(μ-Cl)(P,N)]2 crystallography.
elsevier.com
sci-hub.se 参考文章(46)
Eite Drent, Rudmer van Dijk, Roel van Ginkel, Bart van Oort, Robert. I. Pugh, Palladium catalysed copolymerisation of ethene with alkylacrylates: polar comonomer built into the linear polymer chain. Chemical Communications. pp. 744- 745 ,(2002) , 10.1039/B111252J
Christopher J. Richards, David E. Hibbs, Michael B. Hursthouse, PdCl2-Complexes containing phosphinoferrocenyloxazoline ligands. X-Ray crystal structure analysis and application to Grignard cross-coupling Tetrahedron Letters. ,vol. 36, pp. 3745- 3748 ,(1995) , 10.1016/0040-4039(95)00583-X
Floris J. Parlevliet, Martin A. Zuideveld, Christoph Kiener, Huub Kooijman, Anthony L. Spek, Paul C. J. Kamer, Piet W. N. M. van Leeuwen, The synthesis of a calix[6]arene derived diphosphate, its palladium and platinum complexes and the remarkable activity of (syn-calix[6]arene diphophate)Pd(CH3)(CH3CN)OTf in carbon monoxide and ethene copolymerisation Organometallics. ,vol. 18, pp. 3394- 3405 ,(1999) , 10.1021/OM990209P
Francis C. Rix, Maurice Brookhart, Peter S. White, Mechanistic Studies of the Palladium(II)-Catalyzed Copolymerization of Ethylene with Carbon Monoxide Journal of the American Chemical Society. ,vol. 118, pp. 4746- 4764 ,(1996) , 10.1021/JA953276T
Anton Aeby, Felix Bangerter, Giambattista Consiglio, Enantioselective Dicarbonylation of Styrene to Isotactic Poly[1-oxo-2-phenylpropane-1,3-diyl] with phosphinodihydrooxazole-palladium(ii) complexes: Model studies for enantioface selection preliminary communication Helvetica Chimica Acta. ,vol. 81, pp. 764- 769 ,(1998) , 10.1002/HLCA.19980810326
Fumiyuki Ozawa, Tamio Hayashi, Hideo Koide, Akio Yamamoto, Insertion of alkenes into a palladium–acetyl bond Journal of The Chemical Society, Chemical Communications. pp. 1469- 1470 ,(1991) , 10.1039/C39910001469
Pierre Braunstein, Jérôme Durand, Michael Knorr, Carsten Strohmann, Heterobimetallic intermediates in alkene insertion reactions into a Pd–acetyl bond Chemical Communications. pp. 211- 212 ,(2001) , 10.1039/B007171O
Pierre Braunstein, Dominique Matt, Yves Dusausoy, Jean Fischer, Complexes of functional phosphines. 6. Five-membered palladium or platinum metallacycles resulting from nucleophilic attack of .alpha.-phosphino carbanions on organonitriles. Synthesis and crystal structure of [cyclo] trans-Pt[Ph2PC(COOC2H5)C(Ph)NH]2 and [cyclo] Pd(C-N)Cl[.mu.-Ph2PCH2C(NH)C(CN)PPh2]Pd(C-N) [(C-N) = (o-C6H4CH2N(CH3)2)] Organometallics. ,vol. 2, pp. 1410- 1417 ,(1983) , 10.1021/OM50004A028
Joseph X. McDermott, John F. White, George M. Whitesides, Preparation and thermal decomposition of platinum(II) metallocycles Journal of the American Chemical Society. ,vol. 95, pp. 4451- 4452 ,(1973) , 10.1021/JA00794A068
Richard E. Rulke, Jan M. Ernsting, Anthony L. Spek, Cees J. Elsevier, Piet W. N. M. van Leeuwen, Kees Vrieze, NMR study on the coordination behavior of dissymmetric terdentate trinitrogen ligands on methylpalladium(II) compounds Inorganic Chemistry. ,vol. 32, pp. 5769- 5778 ,(1993) , 10.1021/IC00077A020