2-异丙基-5-甲基-2-己烯醛的合成与表征  

Synthesis and characterization of 2-isopropyl-5-methyl-2-hexenal

作　　者：雒佳莉[1] 许文倩[1] 孙树娟[1] 王新胜[1] 李效军[1] 

机构地区：[1]河北工业大学化工学院,天津300130

出　　处：《日用化学工业》2010年第1期41-43,共3页China Surfactant Detergent & Cosmetics

摘　　要：以异戊醛为原料,在回流加热条件下进行羟醛缩合反应合成了2-异丙基-5-甲基-2-己烯醛。考察了催化剂种类和用量、相转移催化剂用量和反应时间等关键因素对反应的影响。实验结果表明,氢氧化钠作催化剂,其用量为异戊醛质量的3.0%,四丁基溴化铵作相转移催化剂,其用量为异戊醛质量的1.0%,反应3 h时,产物收率为83.3%。产品用红外光谱以及1H和13C核磁共振谱进行表征。2 -isopropyl -5 -methyl -2 -hexenal was synthesized from isoamyl aldehyde as starting material and heated under reflux condition through aldol condensation. The effects of catalysts and the catalyst dosage, phase transfer catalyst （ PFC ） dosage and reaction time, et al on the yield were investigated in details. The experimental results indicated that the proper catalyst is sodium hydroxide and the optimum dosage is 3.0% based on isoamyl aldehyde by weight. The proper PTC is tetrabutylammonium bromide and the dosage is 1.0% based on isoamyl aldehyde by weight. The reaction time is 3 h. Under the above - mentioned conditions, the yield of 2 - isopropyl - 5 - methyl - 2 - hexenal achieves 83.3%. The product was characterized by IR spectrum as well as ^1HNMR and ^13CNMR spectra.

关 键 词：2-异丙基-5-甲基-2-己烯醛 羟醛缩合 异戊醛 相转移催化 

分 类 号：TQ224.13[化学工程—有机化工]