作者:Konrad Knoll、Richard R. Schrock
DOI:10.1021/ja00202a045
日期:1989.9
many as 13 double bonds have been isolated by column chromatography on silica gel under dinitrogen at minus}40degree}C and characterized by sup 1}H and sup 13}C NMR and UV-vis studies. The 17-ene has been observed by HPLC. Polyenes containing more than 17 double bonds are relatively unstable under the reaction and subsequent isolation conditions; those containing between 11 and 15 double bonds decompose
7,8-双(三氟甲基)三环(4.2.2.0sup 2.5})deca-3,7,9-triene (TCDT) 可以通过 W(CH-t-Bu)(NAr )(Ot-Bu)sub 2} (Ar = 2,6-Csub 6}Hsub 3}-i-Prsub 2}) 得到活的低聚物,在 Wittig 中可以从中去除金属与新戊醛或 4,4-二甲基-反式-2-戊烯醛发生类似反应。奇数多烯和偶数多烯的混合物已通过反相 HPLC 方法进行分析,具有多达 13 个双键的多烯混合物已通过硅胶柱色谱在 负}40°C 下在双氮下分离,并通过 sup 1}H 和 sup 13}C NMR 和 UV-vis 研究。通过HPLC观察到17-烯。含有超过17个双键的多烯在反应和随后的分离条件下相对不稳定;含有 11 到 15 个双键的那些更容易逐渐热分解。已收集并详细分析了 x = 1-5(最多 11 个双键)的反式(顺式,反式)sub