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Listar por palabra clave "Photocycloaddition"

Mostrando ítems 1-2 de 2

Molecular Oxygen as a Redox Catalyst in IntramolecularPhotocycloadditions of Coumarins

Kranz, Darius Paul; Griesbeck, Axel Georg; Alle, Ronald; Pérez Ruiz, Raul; Neudörfl, Jörg Martin; Meerholz, Klaus; Schmalz, Hans-Günther (Wiley-VCH Verlag, 2012)

Oxygen as a catalyst! While oxygen is usually excluded in nonoxidative photochemical reactions, the photocycloaddition of 3-(alk-4-en-1-yl)-substituted coumarins greatly benefits from the presence of O 2, which was shown ...
Reinventing the De Mayo reaction: synthesis of 1,5-diketones or 1,5-ketoesters via visible light [2+2] cycloaddition of beta-diketones or beta-ketoesters with styrenes

Martínez-Haya, Rebeca; Marzo, L.; König, B. (The Royal Society of Chemistry, 2018-10-21)

[EN] A visible light mediated De Mayo reaction between 1,3-diketones and styrenes following a [2+2] cycloaddition pathway via a photosensitization mechanism gives access to 1,5-diketones. The reaction has been applied to ...

Mostrando ítems 1-2 de 2