CuI-catalyzed tandem carbomagnesiation/carbonyl addition of Grignard reagents with acetylenic ketones: Convenient access to tetrasubstituted allylic alcohols
functionalized tetrasubstituted allylic alcohols were prepared conveniently by CuI-catalyzed tandem carbomagnesiation/carbonyl addition of Grignard reagents with acetylenicketones. The obtained allylic alcohols can be further transformed to polysubstituted indenes by intramolecular cyclization.
A silver-mediated cascade trifluoromethylthiolation and cyclization has been developed for the synthesis of 2-(trifluoromethylthio)-indenones. A variety of arylpropynones underwent this radical oxidative cyclization with AgSCF3 to afford trifluoromethylthiolated indenones in moderate to excellent yields.
three-component reaction of alkynylaryl ketones bearing an ortho-methoxy group, element selenium, and arylboronic acid, providing a facile route to selenofunctionalized chromone products has been developed. This protocol features high efficiency and high regioselectivity, and the use of selenium powder as the selenium source. Mechanistic experiments indicated that the combined oxidative effect of (bis(tri
Solvent‐Regulated Electrochemical Selenylation and Deuteration of Alkynyl Aryl Ketones: Chemoselective Synthesis of 3‐Selenylated Chromones and Deutero‐Selenylated Chalcones
developed an electrochemical reaction for the synthesis of 3-selenylchromones and deutero-selenylated chalcones of alkynyl aryl ketones. This method is free from metal catalysts and oxidants, and is regulated by solvents. The reaction conditions are mild, and a wide range of substrates can be employed to produce selenylated chromones and deutero-selenylated chalcones, displaying potential anti-inflammatory