Abstract
A sulfur-chelated photolatent ruthenium olefin metathesis catalyst has been equipped with supersilyl protecting groups on the N-heterocyclic carbene ligand. The silyl groups function as an irreversible chromatic kill switch, thus decomposing the catalyst when it is irradiated with 254 nm UV light. Therefore, different types of olefin metathesis reactions may be started by irradiation with 350 nm UV light and prevented by irradiation with shorter wavelengths. The possibility to induce and impede catalysis just by using light of different frequencies opens the pathway for stereolithographic applications and novel light-guided chemical sequences.
Original language | English |
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Pages (from-to) | 764-767 |
Number of pages | 4 |
Journal | Angewandte Chemie - International Edition |
Volume | 55 |
Issue number | 2 |
DOIs | |
State | Published - 11 Jan 2016 |
Bibliographical note
Funding Information:The Israel Science Foundation and the Magnet Program of the Office of the Chief Scientist of the Ministry of Industry, Trade & Laboris are gratefully acknowledged for financial support.
Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
Keywords
- N-heterocyclic carbenes
- metathesis
- photochemistry
- polymerization
- ruthenium