中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
10-烯酸甲酯 | Methyl 10-undecenoate | 111-81-9 | C12H22O2 | 198.305 |
—— | 1,20-eicos-10-enedioic acid | 53481-04-2 | C20H36O4 | 340.503 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
二十烷二酸二甲酯 | dimethyl icosanedioate | 42235-38-1 | C22H42O4 | 370.573 |
—— | oxacyclohexadec-11-en-2-one | —— | C15H26O2 | 238.37 |
环十五内酯 | pentadecanolide | 106-02-5 | C15H28O2 | 240.386 |
A commercially available Hoveyda–Grubbs type catalyst (RC303 Zhannan Pharma) was immobilized on mesoporous molecular sieves MCM-41 and on SBA-15 by direct interaction with the sieve wall surface. The immobilized catalysts exhibited high activity and nearly 100% selectivity in several types of alkene metathesis reactions. Ru leaching was found to depend on the substrate and solvent used (the lowest leaching was found for ring-closing metathesis of 1,7-octadiene in cyclohexane – 0.04% of catalyst Ru content). Results of XPS, UV–vis and NMR spectroscopy showed that at least 76% of the Ru content was bound to the support surface non-covalently and could be removed from the catalyst by washing with THF.
一种市售的Hoveyda–Grubbs型催化剂(RC303 Zhannan Pharma)通过直接与介孔分子筛MCM-41和SBA-15的筛壁表面相互作用而固定化。固定化催化剂在多种烯烃复分解反应中显示出高活性和近100%的选择性。研究发现,钌的浸出取决于所使用的底物和溶剂(在环己烷中闭环复分解1,7-辛二烯时,催化剂钌含量的浸出率最低,为0.04%)。XPS、UV–vis和NMR光谱的结果表明,至少76%的钌含量是通过非共价键与载体表面结合的,并且可以通过用THF洗涤从催化剂中去除。