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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
Solvent-selective photoinduced transformations of pyridine-BCl3 Lewis complexes
Ludwig Rüther1, Bastian Dauth1, Kristof J Hintzer2
1Institute of Organic Chemistry, Universität Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany. ruth.gschwind@chemie.uni-regensburg.de.
Photochemistry of pyridine-BCl3 Lewis adducts was explored, revealing unexpected photoinduced hydrolysis or ring contraction in different solvents, challenging existing literature. These findings open new avenues for understanding Lewis acid-base adduct photochemistry.
Area of Science:
- Photochemistry
- Lewis acid-base chemistry
- Organic chemistry
Background:
- Lewis acid-base adducts are crucial in catalysis.
- The photochemistry of these adducts is largely unexplored.
- Pyridine-BCl3 adducts serve as a model system.
Purpose of the Study:
- To investigate the photochemical transformations of pyridine-BCl3 Lewis adducts.
- To elucidate the influence of solvent polarity on these transformations.
- To compare experimental findings with existing literature.
Main Methods:
- Nuclear Magnetic Resonance (NMR) spectroscopy
- Computational modeling (e.g., DFT)
- Photochemical reaction studies in various solvents
Main Results:
- Photoinduced hydrolysis was observed in protic solvents.
- Ring contraction and cyclopentene ammonium ion formation occurred in aprotic solvents.
- These results contradict previously reported literature findings.
Conclusions:
- The photochemical behavior of pyridine-BCl3 adducts is highly dependent on the solvent environment.
- New reaction pathways, including hydrolysis and ring contraction, are identified.
- This study expands the understanding of Lewis acid-base adduct photochemistry and its synthetic potential.
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