Publikation: alpha-Addition von Aminen, Iminen und Hydrazinen an Allenyliden-Komplexe : Bildung von Carben-, Azetidinyliden- und Nitril-Komplexen
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Diarylallenylidene(pentacarbonyl)-chromium and -tungsten complexes, (CO)5M=C=C=CR2 (M = W (1), Cr (2)), react with amines, imines and hydrazines by addition of the nitrogen nucleophile to the Cαallenylidene atom. With NEt3 the adduct formation is reversible. With secondary and primary amines, imines and hydrazines, the initially formed N-ylide complexes react readily further to give carbene, azetidinylidene and nitrile complexes, respectively. For example the reaction of (a) 1 and 2 with HNEt2 or H2NPh gives alkenyl(amino)carbene complexes, (CO)5M=C [C(H)=CR2] NR′2 (3–5); (b) of 1 and 2 with HN=CR2 gives alkenyl(alkylideneamino)carbene complexes, (CO)5M=C [C(H)=CR2] [N=CR′2] (6,7); (c) of 1 with (iPr)N=C(Ph) H the azetidinylidene complex 9; (d) of 1 with 1,2-disubstituted hydrazines such as H(Me)NN(R)H (R = Me, Ph) alkenyl (hydrazino)carbene complexes, (CO)5M=C [C(H)=CR2] [N(Me)N(R)H] (11) and (e) of 1 with H2NNR1R 2 (R1 = R2 = H, Me; R1 = H, R2 = Ph) alkenyl(amino)carbene complexes (13) and/or aciylnitrile complexes, (CO)5W[N = C-C(H=CR2] (12). The structures of representative examples of 6, 11 and 12 were established by X-ray analyses.
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FISCHER, Helmut, Gerhard ROTH, David REINDL, Carsten TROLL, 1993. alpha-Addition von Aminen, Iminen und Hydrazinen an Allenyliden-Komplexe : Bildung von Carben-, Azetidinyliden- und Nitril-Komplexen. In: Journal of Organometallic Chemistry. 1993, 454(1-2), pp. 133-149. ISSN 0022-328X. Available under: doi: 10.1016/0022-328X(93)83234-MBibTex
@article{Fischer1993alpha-23447, year={1993}, doi={10.1016/0022-328X(93)83234-M}, title={alpha-Addition von Aminen, Iminen und Hydrazinen an Allenyliden-Komplexe : Bildung von Carben-, Azetidinyliden- und Nitril-Komplexen}, number={1-2}, volume={454}, issn={0022-328X}, journal={Journal of Organometallic Chemistry}, pages={133--149}, author={Fischer, Helmut and Roth, Gerhard and Reindl, David and Troll, Carsten} }
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