Convenient Synthesis of Some 3-Phenyl-1-benzofuran-2-carboxylic Acid Derivatives as New Potential Inhibitors of CLC-Kb Channels
摘要:
Improved experimental conditions were carried out for the preparation in high yields of some 3-phenyl-1-benzofuran-2-carboxylic acids, potent inhibitors of C1C-K chloride channels. A one-pot condensation-cyclization was set up starting from different 2-hydroxybenzophenones whose reactivity was significantly affected from the electronic properties of their substituents.
Improved experimental conditions were carried out for the preparation in high yields of some 3-phenyl-1-benzofuran-2-carboxylic acids, potent inhibitors of C1C-K chloride channels. A one-pot condensation-cyclization was set up starting from different 2-hydroxybenzophenones whose reactivity was significantly affected from the electronic properties of their substituents.
One-pot synthesis of N-methylindoles from N-methylanilines and of benzofurans from phenols using transition-metal carbene X–H insertion reactions
作者:Mark A. Honey、Alexander J. Blake、Ian B. Campbell、Brian D. Judkins、Christopher J. Moody
DOI:10.1016/j.tet.2009.07.077
日期:2009.10
Transition-metalcarbene X–H insertion reactions (X=N or O) have been employed in the simple conversion of anilines and phenols into indoles and benzofurans, respectively. Thus copper(II) catalyzed N–H insertion reactions of α-diazo-β-ketoesters with N-methylanilines followed by treatment with acidic ion-exchange resin gives indoles. In a similar manner, dirhodium(II) catalyzed O–H insertion reactions