Exclusive 5-<i>exo-dig</i> Hydroarylation of <i>o</i>-Alkynyl Biaryls Proceeding via C−H Activation Pathway
作者:Natalia Chernyak、Vladimir Gevorgyan
DOI:10.1021/ja8006534
日期:2008.4.1
The first example of the palladium-catalyzed exclusive 5-exo-dig hydroarylation of o-alkynyl biaryls has been demonstrated. In contrast to the reported earlier carbocyclizations proceeding via the Friedel-Crafts mechanism, this hydroarylation efficiently proceeds with electron-neutral and electron-deficient arenes, producing fluorene frameworks with defined stereochemistry of the double bond. On the