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Updated: May 14, 2026
09:33
Determination of the Photoisomerization Quantum Yield of a Hydrazone Photoswitch
Published on: February 7, 2022
Enantiospecific photochemical transformations under elevated pressure.
Anoklase J-L Ayitou1, Gaku Fukuhara, Elango Kumarasamy
1Department of Chemistry and Biochemistry, North Dakota State University, 1231 Albrecht Blvd., Fargo, ND 58103, USA.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|January 31, 2013
Summary
Elevated pressure and high temperatures enhance enantiospecific chiral transfer in light-induced reactions. This leads to improved enantioselectivity in photoproducts derived from atropisomeric compounds.
Area of Science:
- Photochemistry
- Organic Chemistry
- Physical Chemistry
Background:
- Chiral transfer is crucial in synthesizing enantiomerically pure compounds.
- Light-induced reactions offer unique pathways for chemical transformations.
- Atropisomeric compounds present challenges and opportunities in stereoselective synthesis.
Purpose of the Study:
- To investigate the effect of elevated pressure and high temperatures on enantiospecific axial-to-point chiral transfer.
- To determine the influence of pressure on enantioselectivity in photoreactions involving atropisomeric compounds.
- To rationalize the observed enantioselectivity based on molecular stability.
Main Methods:
- Utilizing model photoreactions with atropisomeric compounds.
- Conducting experiments under elevated pressure and high-temperature conditions.
- Analyzing enantioselectivity of photoproducts using established analytical techniques.
Main Results:
- Efficient enantiospecific axial-to-point chiral transfer was achieved under elevated pressure and high temperatures.
- Photoreactions with atropisomeric compounds exhibited higher enantioselectivity in photoproducts under elevated pressure.
- Increased stability of optically pure atropisomeric compounds at elevated pressure explained the enhanced enantioselectivity.
Conclusions:
- Elevated pressure is a key factor in improving enantioselectivity for light-induced chiral transfer reactions.
- The findings provide a method for enhancing stereochemical control in photochemical synthesis.
- Understanding pressure-induced stability effects is vital for optimizing chiral transformations.
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