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   Articles with "photocyclization" as a keyword



Unexpected regioselectivity in the photocyclization of a chiral 2,3-bisbenzylidenesuccinate, leading to a podophyllotoxin related cyclolignan

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recommendations! Published in 2018 at "Journal of Photochemistry and Photobiology A: Chemistry"

DOI: 10.1016/j.jphotochem.2018.06.023

Abstract: Abstract The Stobbe condensation between 3′,4′,5′-trimethoxyacetophenone and a benzylidenesuccinate derived from piperonal gave the Z,E-2,3-bisbenzylidenesuccinate as the only product. Such regioselectivity was explained by considering the Newman’s projections of the transition states of this reaction.… read more here.

Keywords: regioselectivity photocyclization; photocyclization chiral; regioselectivity; cyclolignan ... See more keywords

Catalytic Enantioselective 6π Photocyclization of Acrylanilides

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recommendations! Published in 2022 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.2c09267

Abstract: Controlling absolute stereochemistry in catalytic photochemical reactions is generally challenging owing to high rates of background reactivity. Successful strategies broadly rely on selective excitation of the reaction substrate when associated with a chiral catalyst. Recent… read more here.

Keywords: photocyclization acrylanilides; enantioselective photocyclization; catalytic enantioselective; energy ... See more keywords
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Free Radical-Mediated Intramolecular Photocyclization of AIEgens Based on 2,3-Diphenylbenzo[b]thiophene S,S-Dioxide.

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recommendations! Published in 2023 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.2c12738

Abstract: As an important category of photochemical reactions, photocyclization is regarded as an ideal entry point for building intelligent photoresponsive materials. Herein, a series of aggregation-induced emission luminogens (AIEgens) with sensitive photoresponsive behavior are developed based… read more here.

Keywords: thiophene dioxide; diphenylbenzo thiophene; mediated intramolecular; based diphenylbenzo ... See more keywords