摘要
以磷酸作催化剂,γ-丁内酯和环己胺反应合成了1-环己基-2-吡咯烷酮,确定了最佳合成工艺条件:n(γ-丁内酯):n(环己胺):n(磷酸)=1.0:2.0:0.15,反应时间2 h,反应温度为170~200 ℃;产物经减压蒸馏分离提纯,蒸馏后的残余物作催化剂循环使用,1-环己基-2-吡咯烷酮收率90.3%,质量分数99.5%;产物用元素分析、红外光谱、核磁共振等进行了确证.
1-Cyclohexyl-2-pyrrolidinone was prepared by the reaction of γ-butyrolactone and cyclohexylamine catalyzed by phosphoric acid. The optimum process conditions were determined:n(γ- butyrolactone) : n (cyclohexylamine) : n ( phosphoric acid) = 1.0 : 2.0:0. 15, reaction temprature 170 - 200 ℃ and reaction time 2 h. The yield was 90.3% and weight percent of l-cyclohexyl-2-pyrrolidinone was 99.5%. The product was assignd by elementary analysis,IR and ^1HNMR.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2005年第9期702-704,共3页
Fine Chemicals
基金
山东省自然科学基金项目资助(Q98B02118)~~