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Using Restricted Bond Rotations to Enforce Excited State Behavior of Organic Molecules

https://doi.org/10.1055/a-1785-6910

Kandappa, Sunil Kumar; Ahuja, Sapna; Singathi, Ravichandranath; Valloli, Lakshmy Kannadi; Baburaj, Sruthy; Parthiban, Jayachandran; Sivaguru, Jayaraman (April 2022, Synlett)

This account highlights the role of restricted bond rotations to influence excited state reactivity of organic molecules. It highlights photochemical reactivity of various organic molecules and the design strategies that could be exploited by chemists to utilize restricted bond rotations to uncover new excited state reactivity and achieve selectivity.
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Chemoselective Photoreaction of Enamides: Divergent Reactivity towards [3+2]‐Photocycloaddition vs Paternò–Büchi Reaction ^†

https://doi.org/10.1111/PHP.13489

Kandappa, Sunil Kumar; Kumarasamy, Elango; Singathi, Ravichandranath; Valloli, Lakshmy Kannadi; Ugrinov, Angel; Sivaguru, Jayaraman (November 2021, Photochemistry and Photobiology)

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Uncovering New Excited State Photochemical Reactivity by Altering the Course of the De Mayo Reaction

https://doi.org/10.1021/jacs.0c12099

Kandappa, Sunil Kumar; Valloli, Lakshmy Kannadi; Jockusch, Steffen; Sivaguru, Jayaraman (March 2021, Journal of the American Chemical Society)
null (Ed.)
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Taming the excited state reactivity of imines – from non-radiative decay to aza Paternò–Büchi reaction

https://doi.org/10.1039/d0cs00717j

Kandappa, Sunil Kumar; Valloli, Lakshmy Kannadi; Ahuja, Sapna; Parthiban, Jayachandran; Sivaguru, J. (February 2021, Chemical Society Reviews)
null (Ed.)
This review highlights the excited state characteristics of imines and processes that govern their photochemical and photophysical properties. This review examines the pathways for deactivation and types of photochemical reactions that originate from excited imines. This review also features recent strategies that are developed to circumvent the fundamental issues that have plagued the development of the aza Paternò–Büchi reaction.
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