Crossed intermolecular [2+2] cycloadditions of acyclic enones via visible light photocatalysis.
作者： Juana Du , Tehshik P. Yoon
DOI: 10.1021/JA903732V
关键词: Visible spectrum 、 Cyclobutane 、 Catalysis 、 Chemistry 、 Photocatalysis 、 Ruthenium 、 Intermolecular force 、 Photodissociation 、 Photochemistry 、 Visible light irradiation
摘要: Efficient [2+2] heterodimerizations of dissimilar acyclic enones can be accomplished upon visible light irradiation in the presence a ruthenium(II) photocatalyst. Similar cycloadditions under standard UV photolysis conditions are inefficient and unselective. Nevertheless, diverse range unsymmetrical tri- tetrasubstituted cyclobutane structures produced good yields excellent diastereoselectivities using this new method. The reaction is promoted by any source, efficient, gram-scale conducted irradiating with ambient sunlight.
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