15790-94-0

基本信息
反-2-十一烯酸
反-2-十一烯酸, TECH
反-2-十一烯酸,TECH.80%
Undec-2-enoic acid
RARECHEM AL BK 0167
(E)-2-Undecenoic acid
(2E)-2-Undecenoic acid
TRANS-2-UNDECENOIC ACID
trans-undec-2-enoic acid
trans-2-Undecylenic acid
TRANS-2-UNDECENOIC ACID: TECH., 80%
物理化学性质
常见问题列表
反-2-十一烯酸是一种有机中间体,有文献报道其可由壬醛和膦酰基乙酸甲酯二乙酯一步反应制备得到或者由十一烷酸氧化得到。
N2气氛下,将NaH(油中60%w / w,0.054 mol)悬浮在THF(N2气氛)中,在5分钟内滴加膦酰基乙酸甲酯二乙酯(54 mmol)。在室温下继续搅拌约2-3分钟。15分钟内滴加壬醛(49 mmol),继续搅拌2 h,用Et2O稀释溶液,用饱和NaHCO3水溶液和盐水洗涤,干燥合并的有机萃取液(MgSO4)并蒸发。用15∶1己烷/ EtOAc在硅胶(5.0×20cm)上通过快速色谱纯化残余物,得到产物反-2-十一烯酸。
The crystal packing of trans-2-Undecenoic acid (E)-undec-2-enoic acid) is described by layers of acid dimers parallel to the (0 4 1) plane which are featured by layers of polar headgroups and hydrophobic hydrocarbon chains. The carboxylic group and the following three carbon atoms (C2, C3, C4) of the trans-2-Undecenoic acid (E)-undec-2-enoic acid) molecule lie in one plane, whereas the atoms of the hydrocarbon chain starting from C4 until C11 adopt a nearly fully staggered conformation.