(Z)-4-arylidene-5(4H)-oxazolones: molecular platforms with fascinating photoproperties

Conférence du Dr. Esteban P. Urriolabeitia de l'Institut de Synthèse Chimique et Catalyse Homogène de l'Université de Saragosse (Espagne) en amphi Fermi le jeudi 12 mai. Organisée par le Laboratoire d'Innovation Moléculaire et Applications (LIMA)

Summary: Unsaturated 4-arylidene-5(4H)-oxazolones are compounds known from the end of the 19th century. Often considered as valuable synthetic precursors or intermediates in preparative organic chemistry, their organometallic chemistry was unknown until 2005. Three different aspects of organopalladium complexes from oxazolones will be shown here: (1) the incorporation of the Pd to the oxazolone scaffold through C-H activation and the plausible catalytic functionalization; (2) the amplification of the fluorescence of oxazolones achieved by Pd-intramolecular lock; (3) the unprecedented fully stereoselective photochemical reactivity of the palladated oxazolones to afford diaminotruxillic cyclobutanes.