Fun with photochemistry. From switching to asymmetric synthesis

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• Professor Matthew J. Fuchter, Department of Chemistry, Imperial College
• Thursday 30 May 2019, 14:00-15:00
• Haworth 203.

If you have a question about this talk, please contact Dr Dwaipayan Chakrabarti.

I2S Seminar hosted by Prof. Tim Albrecht and Prof. David Hodson

This talk will give an overview of two aspects of our group’s research, both of which are linked by a desire to use light to drive chemistry. The first part will focus on our discovery of the arylazopyrazoles [1,2], which offer quantitative photoswitching and high thermal stability of the Z isomer (half-lives of up to ∼1000 days). It will summarise our studies to elucidate the origin of the long thermal half-lives and excellent addressability of the arylazopyrazoles, and our initial studies to apply these compounds as photopharmacological agents [3]. Inspired by our work on chiral materials [4,5], the second part will present our efforts to revisit asymmetric photochemical synthesis using circularly polarized (chiral) light. It will present the principle that two wavelengths of circularly polarized light can be used to control separate reactions. In doing so, a photostationary state (PSS) can be set up in such a way that the enantioselectivity intrinsic to each step can combine additively, significantly increasing the asymmetric induction possible in these reactions [6].

[1] J. Am. Chem. Soc. 2014, 136, 11878 [2] J. Am. Chem. Soc. 2017, 139, 1261 [3] ACS Infect. Dis. 2017, 3, 152 [4] Nature Photon. 2013, 7, 634 [5] Nature Rev. Chem. 2017, 1, 0045 [6] Chem. Sci. 2015, 6, 3853

This talk is part of the School of Chemistry Seminars series.

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• Haworth 203
• School of Chemistry Seminars

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