Unexpected palladium catalyzed O-arylation occurring in 4-(4-fluoro-3-nitrophenyl)-1,2-dimethyl-5-nitro-1H-imidazole series
作者:Laura Zink、Kevin Neildé、Maxime D. Crozet、Patrice Vanelle
DOI:10.1016/j.tetlet.2012.07.107
日期:2012.10
We describe herein a new unexpected palladium-catalyzed O-arylation reaction in fluorinated nitro(o-nitrophenyl)imidazole series involving arylboronic acids under Suzuki–Miyaura cross-coupling reaction conditions.
and high yielding synthesis (mean yield = 83%) of various 4-aryl, 4-heteroaryl, and 4-styryl-1,2-dimethyl-5-nitro-1H-imidazoles by palladium-catalyzed Suzuki-Miyauracross-coupling reactions usingmicrowaveirradiation is described. cross-coupling - 5-nitroimidazoles - palladium - Suzuki reaction - arylations