The cleavage of heterocyclic compounds in organic synthesis II Use of 5-nitroisatine for synthesis of various nitrogenous heterocycles
作者:Jan Hlaváč、Miroslav Soural、Pavel Hradil、Iveta Fryšová、Jan Slouka
DOI:10.1002/jhet.5570410426
日期:2004.7
of 5-nitroisatine were studied with nucleophiles like heterocyclic amines and alkaline hydroxide. With the use of alkaline hydroxide it was converted into 2-amino-5-nitrophenylglyoxylic acid 2, with piperidine, morpholine and carbethoxypiperazine to its amides 4a-4c or by oxidation to 5-nitroanthranilic acid 7. This acid was used for synthesis of 3-hydroxy-6-nitro-2-phenyl-1H-quinolin-4-one 10. Semicarbazone
研究了5-硝基isatine与亲核试剂(如杂环胺和碱性氢氧化物)的反应。通过使用碱性氢氧化物,将其与哌啶,吗啉和羧乙氧基哌嗪转化为2-氨基-5-硝基苯基乙醛酸2,生成酰胺4a-4c或氧化为5-硝基邻氨基苯甲酸7。该酸用于合成3 -羟基-6-硝基-2-苯基- 1 H ^ -喹啉-4-酮10.缩氨基脲5- nitroisatine的11转化成5-(2-氨基-5-硝基苯基)-2,3,4,5-四氢-1,2,4-三嗪-3,5-二酮12.将该化合物进行环缩合,得到8-硝基-2,3-二氢-5 H- [1,2,4]三嗪-[5,6-b ] indol-3-one 13不成功。