Utilizing Solubility Differences to Achieve Regiocontrol in the Synthesis of Substituted Quinoline-4-carboxylic Acids
作者:Peter Lindsay-Scott、Helen Barlow
DOI:10.1055/s-0035-1561395
日期:——
A practical method for the regiocontrolled synthesis of substituted quinoline-4-carboxylic acids is described. Solubility differences between the product quinoline regioisomers enable their facile separation, thus avoiding any challenging chromatographic purifications and allowing access to highly substituted quinoline compounds in three steps from commercially available anilines.
Direct One-Pot Synthesis of Naphthoxindoles from 4-Bromooxindoles by Suzuki-Miyaura Coupling and Aldol Condensation Reactions
作者:Kyeong-Yong Park、Bum Tae Kim、Jung-Nyoung Heo
DOI:10.1002/ejoc.201301242
日期:2014.1
An efficient one-pot synthesis of naphthoxindoles by using 4-bromoindolin-2-ones and 2-formylphenylboronic acids has been developed. The coupling reaction proceeds in good to excellent yields under microwave irradiation through a Suzuki–Miyaura coupling and an aldolcondensation cascade reaction. In addition, this protocol permits the facile construction of naphthoxindoles through an expanded scope