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標題: Preparation of diaryl bimetallic compounds via nucleophilic substitution reactions of indenyl on tricarbonyl(eta(6)-4-fluorotoluene)chromium and tricarbonyl(eta(6)-4-fluoroanisole)chromium: molecular structure of 1- tricarbonyl(eta(6)-4-toluene)chromium -
作者: Hong, F.E.
Sun, S.Y.
Wang, S.L.
Liao, F.L.
關鍵字: nucleophilic substitution
hydride shift
diaryl bimetallic compounds
期刊/報告no:: Polyhedron, Volume 17, Issue 10, Page(s) 1643-1650.
摘要: 1-[Tricarbonyl(eta(6)-4-toluene)chromium]-3-[tricarbonyl(eta(6)-4-anisole)chromium]indene (7) and 3-[tricarbonyl(eta(6)-4-toluene)chromium]-1-[tricarbonyl(eta(6)-4-anisole)chromium]indene (7) were obtained as an isomeric mixture from the nucleophilic substitution of tricarbonyl(eta(6)-4-fluoroanisole)chromium (6) by deprotonated 3-[tricarbonyl(eta(6)-4-toluene) chromium]indene (4). Presumably, a 1,3-shift of a benzylic proton takes place during the formation of (7). The ratio of the two isomers is close to 1:1. 1-[Tricarbonyl(eta(6)-4-toluene)chromium]-3[tricarbonyl(eta(6)-4-anisole)chromium]-3-methylindene (9) was obtained as the only isolabIe product from the nucleophilic substitution of deprotonated 3-[tricarbonyl(eta(6)-4-toluene)chromium]methylindene (8) and 1-[tricarbonyl(eta(6)-4-toluene)chromium]methylindene (8') with tricarbonyl(eta(6)-4-fluoroanisole)chromium] (6). No proton shift was observed. Presumably, the nucleophilic substitutions take place directly on the fluorine-bearing carbon in all these cases. The new compounds were characterized by mass, infrared, H-1, and C-13 NMR spectra. The molecular structure of (9) has been determined by an X-ray diffraction study. (C) 1998 Elsevier Science Ltd. All rights reserved.
ISSN: 0277-5387
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