General method for the synthesis of substituted phenanthridin-6(5H)-ones using a KOH-mediated anionic ring closure as the key step,Tetrahedron

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General method for the synthesis of substituted phenanthridin-6(5H)-ones using a KOH-mediated anionic ring closure as the key step
Tetrahedron ( IF 2.1 ) Pub Date : 2010-05-10 , DOI: 10.1016/j.tet.2010.05.014
Emmanuelle Dubost , Rosa Magnelli , Thomas Cailly , Rémi Legay , Frédéric Fabis , Sylvain Rault

Substituted phenanthridin-6(5H)-ones were obtained in a two-step procedure involving a Suzuki cross-coupling reaction followed by a KOH-mediated anionic ring closure. The influence of the nature and the position of the substituents on the cyclization step were studied. This methodology offers a general and practical route to diversely substituted phenanthridin-6(5H)-ones.

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