Studies on fluorine-containing heterocyclic compounds. 3. Reactions of 3,5-dinitro-2-chlorobenzotrifluoride and 3,5-dinitro-4-chlorobenzotrifluoride with sulfur and nitrogen-containing nucleophiles
作者:Ching-Sung Chi、Mei-Jen Chen、Shi-Quin Liang、De-Hua Chen
DOI:10.1016/s0022-1139(00)81068-4
日期:1988.3
The reactions of 3,5-dinitro-4-chlorobenzotrifluoride (la) and 3,5-dinitro-2-chlorobenzotrifluoride (lb) with sulfur- and nitrogen-containing nucleophiles furnished the substituted benzothiazo-N-oxide (3,5) and S-(5-nitro-2-trifluoromethylphenyl-1,4-dithioglycolic ethyl ester(4). Similarly, the reaction of ethyl aminoacetate with lb gave substituted imidazol-N-oxide(8) and tetraazacyclooctanol(9).
3,5-二硝基-4-氯苯并三氟(1a)和3,5-二硝基-2-氯苯并三氟(1b)与含硫和氮的亲核试剂的反应提供了取代的苯并噻唑-N-氧化物(3,5)和S-(5-硝基-2-三氟甲基苯基-1,4-二硫代乙醇酸乙酯(4)。类似地,氨基乙酸乙酯与1b反应生成取代的咪唑-N-氧化物(8)和四氮杂环辛醇(9)。讨论了9的形成。