摘要
2-甲基-5-硝基眯唑与乙酸氯甲酯反应制备了1-乙酰氧甲基-2-甲基-4-硝基眯唑,并通过考察2-甲基-5-硝基咪唑与乙酸氯甲酯的摩尔比,碳酸钾用量,相转移催化剂用量以及反应时间等因素对反应的影响,得到了优化的工艺条件。当n(乙酸氯甲酯):n(无水碳酸钾):n(苄基三乙基氯化铵):n(2-甲基-5-硝基咪唑)= 1.3:1.29:0.037:1,丙酮为溶剂,反应温度56℃,反应时间1 h时,收率可达80.1%。
1-Acetoxymethyl-2-methyl-4-nitroimidazole, the important intermediate for the synthesis of 5-nitroimidazole, was synthesized from 2-methyl-5-nitroimidazole and chloromethyl acetate. Under the optimal conditions, i. e. , n (chloromethyl acetate) : n (anhydrous potassium carbonate) : n(TEBA) : n(2-methyl-5-nitroimidazole)=1. 3 : 1.29 : 0. 037 : 1, acetone as solvent, reaction temperature 56 ℃, reaction time 1 h, the yield of the product was up to 80. 1%.
出处
《精细石油化工》
CAS
CSCD
北大核心
2006年第4期6-8,共3页
Speciality Petrochemicals