Dinuclear ru-aqua complexes for selective epoxidation catalysis based on supramolecular substrate orientation effects

Carlo Di Giovanni, Albert Poater, Jordi Benet-Buchholz, Luigi Cavallo, Miquel Solà, Antoni A. Llobet

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Ru-aqua complex {[RuII(trpy)(H2O)] 2(μ-pyr-dc)}+ is a powerful epoxidation catalyst for a wide range of linear and cyclic alkenes. High turnover numbers (TNs), up to 17000, and turnover frequencies (TOF), up to 24120 h-1 (6.7 s -1), have been obtained using PhIO as oxidant. This species presents an outstanding stereospecificity for both cis and trans olefins towards the formation of their corresponding cis and trans epoxides. In addition, it shows different reactivity to cis and trans olefins due to a substrate orientation supramolecular effect transmitted by its ligand scaffold. This effect together with the impressive reaction rates are rationalized using electrochemical techniques and DFT calculations. A new Ru-aqua complex that behaves as a powerful epoxidation catalyst for a wide range of linear and cyclic alkenes is reported. High turnover numbers and frequencies are obtained by using PhIO as oxidant. The complex shows an outstanding stereospecificity for both cis and trans olefins towards the formation of their corresponding cis and trans epoxides (see figure). © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageEnglish (US)
Pages (from-to)3898-3902
Number of pages5
JournalChemistry - A European Journal
Volume20
Issue number14
DOIs
StatePublished - Mar 3 2014

ASJC Scopus subject areas

  • Chemistry(all)

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