A regioselective formal [4 + 2] cycloaddition for the assembly of highly functionalized benzene rings was successfully developed. In this reaction, olefinic C–H bond functionalization/cyclization cascadereaction followed by rearomatization led to the desired molecules in one step under mild reaction conditions. This protocol also displays a broad substrate scope and good tolerance to a wide range
Studies with enaminones: reactivity of 1,5-disubstituted-1,4-pentadien-3-ones toward electrophilic reagents. a novel route to azolylazines, benzofuranals, pyranones
作者:Saleh Al-Mousawi、Seham El-Sherbiny、Elizabeth John、Mervat Mohammed Abdel-Khalik、Mohammed Hilmy Elnagdi
DOI:10.1002/jhet.5570380422
日期:2001.7
Several new enaminodienones prepared from substituted acetone and dimethylformamide dimethylacetal were used as precursors for synthesis of pyridines, pyranones and benzofurans.