Journal
TETRAHEDRON
Volume 65, Issue 7, Pages 1397-1401Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2008.12.030
Keywords
Iminophosphoranes; Aza-Wittig reaction; Anion sensing; Electrochemistry
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Funding
- Fundacion Seneca (Agencia de Ciencia y Tecnologia de la Region de Murcia [04509/GERM/06]
- Programa de Ayudas a Grupos de Excelencia de la Region de Murcia, Plan Regional de Ciencia y Tecriologia 2007/2010
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One-flask preparation of bisferrocenyl-substituted urea and thiourea and trisferrocenyl-substituted guanidine have been achieved from the iminophosphorane derived from ferrocenemethyl azide by using aza-Wittig reactions with carbon dioxide and carbon disulfide. Electrochemical Studies indicate that there is no electronic communications between the peripheral ferrocene units and only one reversible redox wave is observed, which underwent a remarkable cathodic shift (Delta E-1/2 100-170 mV) in the presence of dihydrogenphosphate anion. (C) 2008 Elsevier Ltd. All rights reserved.
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