Kinetico-mechanistic studies on the formation of seven-membered [C,N]-platinacycles: the effect of methyl or fluoro substituents on the aryl ancillary ligands.
作者： Margarita Crespo , Mercè Font-Bardia , Manuel Martínez
DOI: 10.1039/C5DT01926E
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摘要: The reactions of dinuclear [Pt2(4-RC6H4)4(μ-SEt2)2] (R = Me or F), mononuclear [Pt(4-RC6H4)2(SMe2)2] H), platinum(II) compounds with imines the general formula 2-X,6-YC6H3CHNCH2Ph (X Br, Y F; X Cl, H) produced seven-membered [C,N]-platinacycles. reaction consists initial formation cyclometallated platinum(IV) followed by a three step process: reductive elimination, isomerisation resulting non-cyclometallated intermediate and final cycloplatination process. Combined 1H NMR UV-Vis kinetico-mechanistic studies indicated that rate determining process depends on nature aryl-Pt ligand (phenyl, p-tolyl p-fluorophenyl).
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