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2-甲基-2-硝基-1-叠氮丙烷合成条件优化 被引量:1

Synthesis Optimization of 2-methyl-2-nitro-1-azidopropane
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摘要 以2-甲基-2-硝基丙醇为原料,经两步反应得到2-甲基-2-硝基-1-叠氮丙烷。产物结构经IR和NMR确证。通过对两步反应实验条件的考察,确定了以三乙胺为缚酸剂、三甲胺盐酸盐为催化剂,合成甲磺酸(2-甲基-2-硝基)丙酯的最优条件为:n(2-甲基-2-硝基丙醇)∶n(甲磺酰氯)∶n(三乙胺)∶n(三甲胺盐酸盐)=1.0∶1.2∶1.0∶0.05、二氯甲烷为溶剂,室温下反应2 h,甲磺酸(2-甲基-2-硝基)丙酯产率为93.3%;合成2-甲基-2-硝基-1-叠氮丙烷的最佳条件为:n[甲磺酸(2-甲基-2-硝基)丙酯]∶n(叠氮化钠)=1.0∶1.5,V(二甲基亚砜)∶V(水)=10∶1,在120℃下反应24 h,2-甲基-2-硝基-1-叠氮丙烷产率可达93.7%。 2-Methyl-2-nitro-l-azidopropane was synthesized from 2-methyl-2-nitropropanol via a two- step procedure. The structure of the targeted product was confirmed by Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopy. The yield of 2-methyl-2-nitropropyl methanesulfonate was 93.3% when triethylamine (Et3N) was used as acid binding agent, trimethylamine hydrochloride ( Me3N HC1 ) as catalyst, n ( 2-methyl-2-nitropropanol ) : n ( methanesulfonyl chloride ) : n ( Et3 N ) : n ( Me3 N · HC1 ) = 1.0 : 1.2 : 1.0 : 0. 05, dichloromethane as solvent, at room temperature, 2 h. The optimum conditions for synthesis of 2-methyl-2-nitro- azidopropane were determined as follows : n ( 2-methyl-2-nitropropyl methanesulfonate ) : n ( sodium azide. ) = 1.0: 1.5, V( dimethyl sulfoxide) : V(water) = 10: 1, at 120 ℃ for 24 h. Under the above conditions, the yield of 2-methyl-2-nitro-azidopropane reached 93.7 %.
出处 《精细化工》 EI CAS CSCD 北大核心 2018年第1期170-173,共4页 Fine Chemicals
基金 江苏省前瞻性联合研究项目(BY2016066-02)~~
关键词 甲磺酸(2-甲基-2-硝基)丙酯 三乙胺 2-甲基-2-硝基-1-叠氮丙烷 精细化工中间体 2-methyl-2-nitropropyl methanesulfonate trimethylamine hydrochloride 2-methyl-2-nitro-1 - azidopropane fine chemical intermediates
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