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![[(DPEPhos)(bcp)Cu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)
[(DPEPhos)(bcp)Cu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst
Published on: May 21, 2019
[2 + 2]Photocyclization in a single-crystal-to-single-crystal transformation of a TTF-amido-pyridine
Thomas Devic1, Patrick Batail, Narcis Avarvari
1Laboratoire de Chimie, Ingénierie Moléculaire et Matériaux d'Angers, UMR 6200, Université d'Angers, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France.
Abstract:
The redox active ligand EDT-TTF-CONH-3-pyridine undergoes a [2 + 2] cycloaddition upon irradiation with polychromatic light, an unprecedented single-crystal-to-single-crystal transformation for a TTF derivative.
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Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.

