摘要
BF3·Et2O助催化剂加速了[L2]Pd (OAC)2(L:手性双瞵配体)催化的丙烯与一氧化碳立体选择性交替共聚反应,在相对较短的时间里合成了手性聚酮高分子,13C NMR和1H NMR,及摩尔旋光度证实产物具有较高的区域规整度和立构规整度,红外光谱指出产物同时具有螺旋缩酮和交替聚酮结构,凝胶渗透色谱法测定产物具有较低的分子量和宽的聚合度。
BF3·Et2O as a co-catalyst in alternating copolymerization of propene and carbon monoxide catalyzed by [ L2 ] Pd （OAC）2（La = chiral diphosphine ligand ） in CH2Cl2/CH3OH was reported. High yields of chiral polyketone was obtained. 13C NMR , 1H NMR and molar optical rotation confirmed that the copolymer have alternating structure and high streroregularity. Irspectra of the copolymers showed that both spiroketal and pure ketone structure were present at the same time. Low molecular weight and wide polydipersity of chiral polyketone were achieved.
出处
《分子催化》
EI
CAS
CSCD
北大核心
2006年第3期193-197,共5页
Journal of Molecular Catalysis(China)
