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Bartosz Bieszczad on Muck Rack

Bartosz Bieszczad

As seen in: Color Research & Application, Wiley Online Library, MDPI
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Articles

Acyl-1,4-Dihydropyridines: Universal Acylation Reagents for Organic Synthesis

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By Bartosz Bieszczad, Karthikeyan Manoharan
| MDPI
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
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Photochemical C−H Hydroxyalkylation of Quinolines and Isoquinolines

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By Bartosz Bieszczad, Paolo Melchiorre, Luca Alessandro Perego
| Color Research & Application Verified
Communication Photochemical C‐H Hydroxyalkylation of Quinolines and Isoquinolines Paolo Melchiorre Corresponding Author E-mail address: pmelchiorre@iciq.es Institute of Chemical Research of Catalonia (ICIQ), ICIQ, Av. Països Catalans 16, 43007 Tarragona, SPAIN Search for more papers by this author PDF PDF Share Abstract We report herein a visible light‐mediated C‐H hydroxyalkylation of quinolines and isoquinolines that proceeds via a radical path.
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Stereocontrolled Synthesis of 1,4‐Dicarbonyl Compounds by Photochemical Organocatalytic Acyl Radical Addition to Enals

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By Giulio Goti, Bartosz Bieszczad, Paolo Melchiorre, Alberto Vega‐Peñaloza
| pericles.pericles-prod.literatumonline.com
Abstract We report a visible‐light‐mediated organocatalytic strategy for the enantioselective acyl radical conjugate addition to enals, leading to valuable 1,4‐dicarbonyl compounds. The process capitalizes upon the excited‐state reactivity of 4‐acyl‐1,4‐dihydropyridines that, upon visible‐light absorption, can trigger the generation of acyl radicals. By means of a chiral amine catalyst, iminium ion activation of enals ensures a stereoselective radical trap.
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