从锆系催化剂的结构修饰出发,合成了一系列具有Zr(OAr)nCl4-n·m Ar OH(n=1~4,m=0~7)结构的芳氧基锆系催化剂,并研究了锆酚配比及游离Ar OH含量等对乙烯齐聚行为的影响.结果表明,Zr(OPh)3Cl·m Ph OH/TEA/Et Al Cl2催化...从锆系催化剂的结构修饰出发,合成了一系列具有Zr(OAr)nCl4-n·m Ar OH(n=1~4,m=0~7)结构的芳氧基锆系催化剂,并研究了锆酚配比及游离Ar OH含量等对乙烯齐聚行为的影响.结果表明,Zr(OPh)3Cl·m Ph OH/TEA/Et Al Cl2催化体系具有较高的齐聚催化活性[6.8×104g/(mol Zr·h)],所得产物主要为C4~C24的α-烯烃,无高聚物生成.研究发现,游离酚的存在对体系的催化性能有较大影响.该系列芳氧基锆系催化剂可催化乙烯齐聚与Friedel-Crafts烷基化的串联反应,即齐聚反应产物α-烯烃与甲苯溶剂发生烷基化反应而生成多取代芳香烃,压力越大烷基化反应程度越高.展开更多
Barbier allylation and Friedel-Crafts alkylation of (un)substituted benzaldehydes, allylbromide and phenols can be combined in a one-pot process in ionic liquid (BuPyC1/SnC12·2H2O) to directly synthesize 4-(...Barbier allylation and Friedel-Crafts alkylation of (un)substituted benzaldehydes, allylbromide and phenols can be combined in a one-pot process in ionic liquid (BuPyC1/SnC12·2H2O) to directly synthesize 4-(2-hydroxyphenyl)- 4-[(un)substituted phenyl]but-1-ene compounds, which were applied to the synthesis of 4-(substituted phenyl)- chromans through intramolecular cyclization reactions.展开更多
文摘从锆系催化剂的结构修饰出发,合成了一系列具有Zr(OAr)nCl4-n·m Ar OH(n=1~4,m=0~7)结构的芳氧基锆系催化剂,并研究了锆酚配比及游离Ar OH含量等对乙烯齐聚行为的影响.结果表明,Zr(OPh)3Cl·m Ph OH/TEA/Et Al Cl2催化体系具有较高的齐聚催化活性[6.8×104g/(mol Zr·h)],所得产物主要为C4~C24的α-烯烃,无高聚物生成.研究发现,游离酚的存在对体系的催化性能有较大影响.该系列芳氧基锆系催化剂可催化乙烯齐聚与Friedel-Crafts烷基化的串联反应,即齐聚反应产物α-烯烃与甲苯溶剂发生烷基化反应而生成多取代芳香烃,压力越大烷基化反应程度越高.
文摘Barbier allylation and Friedel-Crafts alkylation of (un)substituted benzaldehydes, allylbromide and phenols can be combined in a one-pot process in ionic liquid (BuPyC1/SnC12·2H2O) to directly synthesize 4-(2-hydroxyphenyl)- 4-[(un)substituted phenyl]but-1-ene compounds, which were applied to the synthesis of 4-(substituted phenyl)- chromans through intramolecular cyclization reactions.