科研之友
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摘要
Alkylation of 5-nitro-2-pyridone by alkenyl halides in acetone in the presence of K2CO3 proceeds with generation of a mixture of N- and O-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 3-bromine-2,2-dimethyl-7-nitro-3,4-dihydro-2H-pyrido[2,1-b][1,3] oxazinium bromide, and with iodine giving 2,2-dimethyl-7-nitro-3,4-dihydro-2H-pyrido[2,1-b][1,3] oxazinium triiodide.
- 出版日期2016-8
