作者:E. V. Kalita、D. G. Kim、O. S. Yeltsov、T. S. Shtukina
DOI:10.1134/s1070428016080091
日期:2016.8
Alkylation of 5-nitro-2-pyridone by alkenyl halides in acetone in the presence of K2СО3 proceeds with generation of a mixture of N- and О-derivatives with N-isomer prevailing. 1-Allyl- and 1-methylallyl-5-nitro-2-pyridone react with halogens with the formation of 2-halomethyl-6-nitro-2,3-dihydrooxazolo[3,2-a]-pyridinium halides. 1-Prenyl-5-nitro-2-pyridone reacts with bromine with the formation of
5-硝基-2-吡啶酮的烷基化通过烯基卤化物在丙酮中K的存在2 СО 3继续进行代N-和О衍生物与N-异构体盛行的混合物组成。1-烯丙基和1-甲基烯丙基-5-硝基-2-吡啶酮与卤素反应,形成2-卤甲基-6-硝基-2,3-二氢恶唑并[3,2- a ]-吡啶鎓卤化物。1-异戊二烯基-5-硝基-2-吡啶酮与溴发生反应用的3-溴-2,2-二甲基-7-硝基-3,4-二氢-2形成Н -吡啶并[2,1- b ] [ 1,3]恶嗪,溴化,并用碘使2,2-二甲基-7-硝基-3,4-二氢-2 Н -吡啶并[2,1- b ] [1,3]恶嗪三碘化物。