Metal-Free Arylation of Ethyl Acetoacetate with Hypervalent Diaryliodonium Salts: An Immediate Access to Diverse 3-Aryl-4(1H)-Quinolones
摘要:
A clean arylation protocol of ethyl acetoacetate was developed using hypervalent diaryliodonium salts under mild and metal-free conditions. The scope of the reaction, using symmetric and unsymmetric iodonium salts with varying sterics and electronics, was examined. Further, this method has been applied for the synthesis of antimalarial compound ELQ-300, which is currently in preclinical development.
CuI/<scp>l</scp>-Proline-Catalyzed Coupling Reactions of Aryl Halides with Activated Methylene Compounds
作者:Xiaoan Xie、Guorong Cai、Dawei Ma
DOI:10.1021/ol0518838
日期:2005.10.1
[reaction: see text] The arylation of ethyl acetoacetate, ethyl benzoyl acetate, and diethyl malonate under the catalysis of CuI/L-proline in DMSO proceeds smoothly at 40-50 degrees C in the presence of Cs2CO3 to provide the 2-aryl-1,3-dicarbonyl compounds in good yields. Both aryl iodides and aryl bromides are compatible with these reaction conditions.
Metal-Free Arylation of Ethyl Acetoacetate with Hypervalent Diaryliodonium Salts: An Immediate Access to Diverse 3-Aryl-4(1<i>H</i>)-Quinolones
作者:Andrii Monastyrskyi、Niranjan K. Namelikonda、Roman Manetsch
DOI:10.1021/jo5023958
日期:2015.3.6
A clean arylation protocol of ethyl acetoacetate was developed using hypervalent diaryliodonium salts under mild and metal-free conditions. The scope of the reaction, using symmetric and unsymmetric iodonium salts with varying sterics and electronics, was examined. Further, this method has been applied for the synthesis of antimalarial compound ELQ-300, which is currently in preclinical development.