General method for the synthesis of substituted phenanthridin-6(5H)-ones using a KOH-mediated anionic ring closure as the key step
摘要:
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. (C) 2010 Elsevier Ltd. All rights reserved.
General method for the synthesis of substituted phenanthridin-6(5H)-ones using a KOH-mediated anionic ring closure as the key step
摘要:
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. (C) 2010 Elsevier Ltd. All rights reserved.
Reactivity of<i>Para</i>-Substituted Fluorobenzenes in Palladium-catalyzed Intermolecular Direct Arylations
作者:Mian He、Jean-François Soulé、Henri Doucet
DOI:10.1002/cctc.201500185
日期:2015.7.13
C‐4 on fluorobenzene derivatives, for palladium‐catalyzed directarylation at α‐position to the fluorine atom has been explored. With moderate electron‐withdrawing substituents, the reaction proceeds nicely using phosphine‐free PdCl2 catalyst, at a very low loading, and potassium pivalate/dimethylacetamide (PivOK/DMA) as catalyticsystem. In all cases, a regioselective arylation at the α position to