Polyfunctional imidazoles: VI. Synthesis of 2-amino-1-aryl-4-chloro-1H-imidazole-5-carboxylic acids derivatives
作者:V. A. Chornous、A. N. Grozav、M. V. Vovk
DOI:10.1134/s1070428012050132
日期:2012.5
hydroxylamine and thionyl chloride were converted into 1-aryl-2,4-dichloroimidazole-5-carbonitriles which by the action of sodium azide and tin(II) chloride were transformed into 2-amino-1-aryl-4-chloroimidazole-5-carbonitriles. The consecutive reactions of 2-azido-1-aryl-4-chloro-5-formylimidazoles with N-bromosuccinimide, methanol, or amides led to the formation of methyl esters and amides of 2-a
经过羟胺和亚硫酰氯的连续处理,将芳基-2,4-二氯-5-甲酰咪唑转化为1-芳基-2,4-二氯咪唑-5-甲腈,该叠氮钠和氯化锡(II)的作用为转化为2-氨基-1-芳基-4-氯咪唑-5-腈 2-叠氮基-1-芳基-4-氯-5-甲酰咪唑与N-溴琥珀酰亚胺,甲醇或酰胺的连续反应导致形成2-叠氮基-1-芳基-4-氯咪唑-的甲基酯和酰胺。 5-羧酸。后者用氯化锡(II)还原得到相应的2-氨基-1-芳基-4-氯咪唑-5-羧酸衍生物,以及2-叠氮基-1-芳基-4-氯咪唑5-羧酸衍生物的还原。 5-羧酸伴随脱羧并产生2-氨基-1-芳基-4-氯咪唑。