Synthesis of aryl α-keto-acids via the Cu-catalyzed conversion of aryl nitroaldol products
摘要:
Cu(II) salts efficiently catalyze the conversion of a variety of aryl nitroaldol products to afford the corresponding aryl alpha-keto-acids in high yields using 30% aq. AcOH:MeOH (1:1) as the solvent. (C) 2000 Elsevier Science Ltd. All rights reserved.
Unprecedented ortho-acylation of azoxybenzenes with α-oxocarboxylic acids by Pd-catalyzed C–H activation and decarboxylation
作者:Hongji Li、Pinhua Li、Qiong Zhao、Lei Wang
DOI:10.1039/c3cc45492d
日期:——
A palladium-catalyzed ortho-acylation reaction of azoxybenzenes with α-oxocarboxylic acids was developed in the presence of K2S2O8. The established methodology provides a direct approach to obtain acylated azoxybenzenes in good yields.
Synthesis of aryl α-keto-acids via the Cu-catalyzed conversion of aryl nitroaldol products
作者:Milind D Nikalje、Iliyas Sayyed Ali、Gajanan K Dewkar、A Sudalai
DOI:10.1016/s0040-4039(99)02179-6
日期:2000.2
Cu(II) salts efficiently catalyze the conversion of a variety of aryl nitroaldol products to afford the corresponding aryl alpha-keto-acids in high yields using 30% aq. AcOH:MeOH (1:1) as the solvent. (C) 2000 Elsevier Science Ltd. All rights reserved.
A Highly Efficient Palladium-Catalyzed Decarboxylative<i>ortho</i>-Acylation of Azobenzenes with α-Oxocarboxylic Acids: Direct Access to Acylated Azo Compounds
作者:Hongji Li、Pinhua Li、Hui Tan、Lei Wang
DOI:10.1002/chem.201301818
日期:2013.10.18
Avoiding additives: A highly efficient and mild Pd‐catalyzed decarboxylative ortho‐acylation of azobenzenes with α‐oxocarboxylic acids was developed that provides an alternative route to acylated azo compounds. This decarboxylative acylation process was completed in the absence of any additives at ambient temperature, to afford the acylated azobenzenes in moderate to good yields (see scheme).