• The knoevenagel condensation of aromatic aldehydes with ethyl cyanoacetate proceeds smoothly in the presence of potassium fluoride giving products in high yield.

    氟化催化下,芳香乙酸乙酯发生克脑文格尔缩合反应,得到高产缩合产物

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  • 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.

    氟化催化下,芳香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。且得到E异构体

    youdao

  • METHODS 5-amino-1-hydroxyethyl pyrazole-4-carboylic acid was synthesized through condensation of ethyl cyanoacetate and triethyl orthoformate followed by one-pot methodology of cyclization, hydolysis.

    方法甲酸三乙氰乙酸乙酯缩合,然后羟乙基肼环合、水解等一锅法合成5-氨基吡唑-4-甲酸,然后在亚硫酸钠存在条件下加热脱羧得到5-氨基-1-乙基吡唑。

    youdao

  • METHODS 5-amino-1-hydroxyethyl pyrazole-4-carboylic acid was synthesized through condensation of ethyl cyanoacetate and triethyl orthoformate followed by one-pot methodology of cyclization, hydolysis.

    方法甲酸三乙氰乙酸乙酯缩合,然后羟乙基肼环合、水解等一锅法合成5-氨基吡唑-4-甲酸,然后在亚硫酸钠存在条件下加热脱羧得到5-氨基-1-乙基吡唑。

    youdao

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