Aim \ Enanthal diethyl acetal is prepared with heptaldehyde and triethylorthoformate as raw materials.
目的研究以庚醛和原甲酸三乙酯为原料制备庚醛二乙缩醛的工艺条件。
2
Cyclohexanone diethyl acetal was prepared from cyclohexanone with anhydrous ethanol as reactant, ammonium chloride as catalyst, triethylorthoformate as water scavenger.
其制备方法是以氯化铵为催化剂，原甲酸三乙酯为解水剂，由无水乙醇和环己酮缩合合成。
3
METHODS 5-amino-1-hydroxyethyl pyrazole-4-carboylic acid was synthesized through condensation of ethyl cyanoacetate and triethylorthoformate followed by one-pot methodology of cyclization, hydolysis.