Palladium catalyzed decarboxylative acylation of arylboronic acid with ethyl cyanoacetate as a new acylating agent: synthesis of alkyl aryl ketones
作者:Md Yousuf、Tuluma Das、Susanta Adhikari
DOI:10.1039/c5nj01597a
日期:——
containing various functional groups was performed efficiently by ethylcyanoacetate/substituted ethylcyanoacetate as the acylating agent in aqueous triflic acid medium. The alkyl aryl ketones were obtained in good to excellent yields, first by addition of arylboronic acid to the nitrile group of ethylcyanoacetate and their derivatives, followed by in situ decarboxylation of the resulting β-ketoester
The dialkylation and cycloalkylation reactions of active methylene compounds in the presence of readily available imidazolium salts (ionic liquids) as phase transfer catalysts were performed to afford the respective dialkylated or cycloalkylated products. This method is very efficient for the synthesis of 1,1-disubstituted derivatives and cyclopropane and cyclopentane ring systems in a facile manner