Formation of Cyclopent[a]indene and Acenaphthylene from Allyl Esters of Biphenyl Mono- and Di-carboxylic Acids and from Biphenyl Dicarboxylic Anhydrides on Flash Vacuum Pyrolysis at 1000 - 1100°C
Palladium-Catalyzed Benzylation of Carboxylic Acids with Toluene via Benzylic C–H Activation
摘要:
Direct benzylation of carboxylic acids with toluene has been developed via palladium-catalyzed C-H acyloxylation under 1 atm of oxygen. This reaction demonstrates good functional group tolerance and high yields, providing a facile, atom-economic, and efficient method for the synthesis of benzyl esters.
Transition metal free oxidative esterification of alcohols with toluene
作者:Lianghui Liu、Lin Yun、Zikuan Wang、Xuefeng Fu、Chun-hua Yan
DOI:10.1016/j.tetlet.2013.07.114
日期:2013.9
Using Bu4NI as the catalyst and tert-butyl hydroperoxide as the oxidant, direct esterification of alcohols with toluene derivatives was achieved. Mechanistic investigations indicate that the alcohols are sequentially oxidized to aldehydes, carboxylic acids, and then to benzyl esters. Bu4N+ functions as a phasetransfer reagent and iodide catalyzes the reaction. (c) 2013 Elsevier Ltd. All rights reserved.