GC–MS study of thermochemical conversion of guaifenesin in the presence of 1-butyl-3-methylimidazolium-based ionic liquids
作者:Sharifah Bee Abd Hamid、Nader Ghaffari Khaligh、Mahdieh Sharifi、Suzaimi Johari
DOI:10.1007/s11164-016-2858-3
日期:2017.7
performed in the presence of 1-butyl-3-methylimidazolium tetrafluoroborate [BMIM][BF4] ionic liquid at 80 °C within 2 h. After evaluating the effect of different parameters, such as protic and nonprotic solvents, temperature, reaction time, 1-butyl-3-methylimidazolium-based ionic liquids as process media, and the amount of ionic liquid, the results demonstrate that [BMIM][BF4] facilitates the conversion
愈创甘油醚的热化学转化是在80°C下于2小时内在四氟硼酸1-丁基-3-甲基咪唑鎓[BMIM] [BF 4 ]离子液体的存在下进行的。在评估了质子和非质子溶剂,温度,反应时间,基于1-丁基-3-甲基咪唑鎓的离子液体作为工艺介质以及离子液体的量等不同参数的影响后,结果表明[BMIM] [ BF 4 ]促进了愈创甘油醚向3-(2-甲氧基苯氧基)丙醛和其他新产物的转化,而[BMIM] Cl促进了C–O键裂解为2-甲氧基苯酚(愈创木酚)。离子液体[BMIM] [BF 4进行3次使用,而没有任何催化活性的损失。在这项研究中进行了气相色谱-质谱(GC-MS)实验,以揭示愈创甘油醚的降解和产物形成的特征。根据愈创甘油醚转化产物的分布,使用GC-MS数据提出了最合理的机理。