Under Atherton - Todd condition (NaH/CCl4/CEtO)2PHO) , allenyl ketones can give the Z - isomer of B - alkynylenol phosphates, which were transformed successfully into enynes compounds with predominated E - configuration by the reaction with R2CuLi.
提出了合成烯炔类化合物的新路线,联烯基酮(或炔基酮)经磷酸化生成β-炔基烯醇磷酸酯中间体,铜锂试剂的碳负离子取代后者的磷酰基得到烯炔化合物,产物以保留构型为主。
The Influences of the Spacer of Gemini Surfactants on the Structure of Silicic Mesoporous Materials;
Gemini表面活性剂联接基团对合成硅基介孔材料结构的影响
Gemini surfactant is a new type of surfactant, with molecules made up of two amphiphilic moieties covalently connected at the level of the head group by a spacer.
双子表面活性剂是一类新型的表面活性剂,其分子由化学键通过联接基团将两个单链表面活性剂的离子头联接构成。
The surface activity of gemini surfactants strongly depends on the structure of their spacer groups.
结果表明 :双子表面活性剂的表面活性大大高于普通表面活性剂 ,双子表面活性剂溶液的表面活性受其联接基团的影响远大于其烷基链的影响。
Gemini surfactants are made up of two identical amphiphilic moieties covalently connected at the level of the headgroups by a spacer group which has been proved to have predominant surfactant active than ordinary surfactants to analyze the structure of Gemini surfactants in or outsides.
Gemini表面活性剂是由两个单链单头基普通表面活性剂在离子头基处通过联接基团连接而成。