Lewis-Acid-Mediated Domino Reactions of Bis(diacetoxymethyl)-Substituted Arenes and Heteroarenes
作者:J. Arul Clement、Ramakrishnan Sivasakthikumaran、Arasambattu K. Mohanakrishnan、S. Sundaramoorthy、Devadasan Velmurugan
DOI:10.1002/ejoc.201001174
日期:2011.1
A one-potsynthesis of annulated heterocycles involving a Lewis-acid-mediated domino reaction of bis(diacetoxymethyl)-substituted arenes and heteroarenes is described. The reaction of the tetraacetates with arenes and heteroarenes leads to the formation of 1,1-bis-arylated diacetates upon elimination followed by electrocyclohetero-arylated intermediate may lead to the formation of bis-arylated 1,1-diacetates
Improved Synthesis of Aryl-Substituted Anthracenes and Heteroacenes
作者:Guijie Li、Shaolin Zhou、Guowei Su、Yuanhong Liu、Peng George Wang
DOI:10.1021/jo7017334
日期:2007.12.1
[Graphics]A Bronsted acid-catalyzed highly efficient construction,of substituted arylanthracenes and heteroacenes is described, which is assumed to be initiated through the facile formation of a benzylic cation intermediate. This method offers several advantages in comparison with known aromatic cyclodehydration reactions such as high selectivities, mild reaction conditions, and easily accessible starting materials.