摘要
采用气相色谱付立叶变换红外光谱（ＧＣ／ＦＴＩＲ）对２吡啶酮与１１种卤代烃加合物的结构进行研究，并由ＧＣ／ＭＳ确证．结果表明，吡啶酮与卤代烃发生加合反应，在吡啶酮的环上氮位及环外氧位，生成两种互为同分异构体的加合物———氮位与氧位加合物，所有氧位加合物在气相色谱中的保留时间均比氮位加合物短．不同的卤代烃生成的氧位加合物对吸收峰影响不大，它们的红外光谱在１６００—１２８０ｃｍ－１之间，有位置及峰形相似的４个峰；其氮位加合物的红外光谱也相似，即由１６９０ｃｍ－１附近的强峰与２个弱峰组成．氧位加合物与氮位加合物之间，红外光谱差别十分明显，容易区分．
Abstract The adducts structure of 2 pyridone with eleven halohydeocarbons were characterized by GC/FTIR, and confirmed with GC/MS technique. The results showed that the adduction of 2 phridone with any halohydrocarbon produced two adduct isomers, at O site and N site, respectively. The retention time of all O adducts are shorter than that of N adducts in GC. The IR spectra are similar among the O adducts of different halohydrocarbons with 4 peaks between 1600 1280 cm -1 while the N adducts with a special a strong peak near 1690 cm -1 and two weak peaks at 1615 and 1540 cm -1 . The O and N adducts differ significantly. So the 2 pyridone adduct tautomers are easy to separate and identify by GC/FTIR.
出处
《环境科学学报》
CAS
CSCD
北大核心
1999年第2期180-185,共6页
Acta Scientiae Circumstantiae
基金
国家自然科学基金
