Synthesis of 2-aryl(hetaryl)-1-hydroxyimidazoles by the reaction of aliphatic 1,2-hydroxylamino oximes with aromatic and heteroaromatic aldehydes
作者:B. A. Selivanov、A. Ya. Tikhonov
DOI:10.1007/s11172-013-0169-z
日期:2013.5
A reaction of aliphatic 1,2-hydroxylamino oximes bearing the hydroxylamino group at the secondary carbon atom with aromatic and heteroaromatic aldehydes in acetic acid leads to the corresponding 1-hydroxy-2-aryl(hetaryl)-4,5-dialkylimidazoles in high yields. α-Aryl(hetaryl)-nitrones initially formed by the condensation of 1,2-hydroxylamino oximes with aldehydes are quantitatively converted to the corresponding imidazoles.
脂肪族1,2-羟基氨基肟在乙酸中与芳香族和杂芳族醛反应,在仲碳原子上带有羟基氨基,从而高产量地生成相应的1-羟基-2-芳基(杂芳基)-4,5-二烷基咪唑。α-芳基(杂芳基)-腈酮最初由1,2-羟基氨基肟与醛缩合形成,然后定量转化为相应的咪唑。