在氟化钾催化下,芳香醛与氰乙酸乙酯发生克脑文格尔缩合反应,得到高产率的缩合产物。
The knoevenagel condensation of aromatic aldehydes with ethyl cyanoacetate proceeds smoothly in the presence of potassium fluoride giving products in high yield.
在氟化钾催化下,芳香醛与氰乙酸乙酯发生克脑文格尔缩合反应,得到高产率的缩合产物。且只得到E式异构体。
The knoevenagel condensation of aromatic aldehydes with ethyl cyanoacetate proceeds smoothly in the presence of potassium fluoride giving products in high yield. Only the E isomers could be isolated.
具体而言,有改正误文、乙正倒文、增补脱文、删除衍文、保存异文等作用。
Such as correcting mistakes of texts, putting right the reversal words, supplementing the missing words, deleting the unwanted words, saving the different words and etc.
帕罗曾经踢进了尤文的意乙首球,而今天,他来自中场的助攻再次决定了比赛。
Matteo Paro scored Juve's first ever Serie B goal and was again decisive today with his assists from midfield.
整理者根据竹简形制及长短不同,将简文分成甲、乙、丙三组。
The researchers divided these slips into three bundles based on their form and length.
整理者根据竹简形制及长短不同,将简文分成甲、乙、丙三组。
The researchers divided these slips into three bundles based on their form and length.
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