A triad of rhenium-mediated transformations

Gangopadhyay, Jaydip ; Das, Samir ; Sengupta, Suman ; Chakraborty, Indranil ; Chakravorty, Animesh (2003) A triad of rhenium-mediated transformations Proceedings of the Indian Academy of Sciences - Chemical Sciences, 115 (5-6). pp. 333-339. ISSN 0253-4134

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Official URL: http://www.ias.ac.in/chemsci/Pdf-OctDec2003/Pc3322...

Related URL: http://dx.doi.org/10.1007/BF02708226

Abstract

The title transformations are oxygen atom transfer, twin isomerization and regiospecific imine oxidation.Bispyridyldiazole ligands have furnished new oxygen atom transfer reagents of coordination type ReVOCl3(NN) which undergo a slower transfer to PPh3 than the corresponding azole reagents. The rate of twin isomerization (linkage and geometrical) of meridional azole complexes of coordination type ReIII(OPnP)Cl3(NN) to facial ReIII(PnPO)Cl3(NN) decreases rapidly asn increases in the interval 1-4 (PnP is Ph2P(CH2)nPPh2). An α-diimine chelate of type ReV(NPh)Cl3(NN) is shown to undergo facile oxidation to the corresponding iminoamide complex ReVI(NPh)Cl3(NN) upon treating with dilute nitric acid. The reaction proceeds via regiospecific nucleophilic addition of waterto the more polarized imine function.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Rhenium-mediated Transformations; Oxygen Atom Transfer; Linkage-cum-geometrical Isomerization; Regiospecific Imine Oxidation
ID Code:6887
Deposited On:26 Oct 2010 05:14
Last Modified:16 May 2016 17:10

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