金属铬配合物催化环氧烷烃与酸酐的共聚反应

来源 :辽宁化工 | 被引量 : 0次 | 上传用户:flj3156
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
合成了氨基双酚化合物,并制备了相应的金属铬配合物,作为引发剂考察其在环氧环己烷与丁二酸酐聚合反应中的催化行为。以2,4-二叔丁基苯酚,多聚甲醛以及N-二甲基乙二胺为原料合成了相应的氨基双酚化合物,并采用核磁共振氢谱对其进行了鉴定。将得到的氨基双酚化合物在无水无氧条件下与无水氯化铬(Cr Cl2)在四氢呋喃中反应后再在空气中氧化制备出相应的三价氨基双酚铬氯配合物。所得到的配合物用核磁共振氢谱以及高分辨质谱进行了表征。制备的氨基双酚氯化铬配合物在有机碱4-(N-二甲基)吡啶(DMAP),PPNCl,及N-Melm的作用下可以有效的引发环氧烷烃(环氧环己烷,环氧氯丙烷,环氧丙烷)与酸酐(邻苯二甲酸酐,丁二酸酐)的开环共聚。对聚合物采用核磁共振氢谱凝胶渗透色谱(GPC)进行表征。 Aminobiphenol compounds were synthesized and the corresponding metal chromium complexes were prepared. Their catalytic activities were investigated as initiators in the polymerization of cyclohexene oxide and succinic anhydride. The corresponding aminobisphenol compounds were synthesized from 2,4-di-tert-butylphenol, paraformaldehyde and N-dimethylethylenediamine and identified by 1H-NMR. The obtained aminobisphenol compound was reacted with anhydrous CrCl2 in tetrahydrofuran under anhydrous and anaerobic conditions and then oxidized in air to prepare the corresponding trivalent aminobisphenolate chlorate complex. The obtained complexes were characterized by 1H-NMR and high-resolution mass spectra. The preparation of aminophenol chromium chloride complex can effectively initiate the reaction of alkylene oxide (epoxycyclohexane, cyclohexane and cyclohexene) under the action of organic bases 4- (N-dimethyl) pyridine (DMAP), PPNCl and N-Melm, Epichlorohydrin, propylene oxide) and acid anhydride (phthalic anhydride, succinic anhydride) ring-opening copolymerization. The polymer was characterized by 1H-NMR gel permeation chromatography (GPC).
其他文献
大自然是最美好的    前些天去游紫竹院,感触颇深。已经七八年没来了,今日一游,倍感心旷神怡。这里茂林修竹,湖光山色,绿草如茵,望着那自由嬉戏的水鸟,嗅着那荷塘飘来的阵阵清新,给人一种如醉如痴之感。 坐在休闲椅上,闭目养神,一睁眼,一只活泼可爱的小松鼠正在向我眨着眼睛。我试着用嘴嘘着,做出要给它喂食状,它似乎没有一点惊慌,反而蹿过来,跳过去,盘桓着,踟蹰着,象是和你嬉戏。这可是从前在紫竹院所不曾见