Nucleophilic substitution by 3-amino-1,2-propanediol in nitropyrazines and nitroquinoxalines
作者:George D. Hartman、John E. Schwering
DOI:10.1002/jhet.5570200419
日期:1983.7
Treatment of 2-chloro-3-nitropyrazine and 2-chloro-5-nitropyrazine with 3-amino-1, 2-propanediol affords products derived from displacement of chloride, while similar reaction of methyl 3-nitropyrazinoate and 2-chloro-3-nitroquinoxaline gives clean nitro group replacement. Analogous reaction of methyl 6-chloro-3-nitropyrazinoate affords a mixture containing products derived from competitive displacement
用3-氨基-1,2-丙二醇处理2-氯-3-硝基吡嗪和2-氯-5-硝基吡嗪,得到的产物是氯化物的取代,而3-硝基吡嗪酸甲酯和2-氯-3-的类似反应硝基喹喔啉可提供干净的硝基取代基。6-氯-3-硝基吡嗪酸甲酯的类似反应提供了一种混合物,该混合物含有竞争性取代氯化物和亚硝酸盐的产物。