Zinc perchlorate hexahydrate catalyzed mono- and bis-transesterification of malonic esters was written by Tural, Servet. And the article was included in Turkish Journal of Chemistry in 2008.Name: malonic acid dibutyl ester This article mentions the following:
Com. available zinc perchlorate hexahydrate [Zn(ClO4)2.6H2O] was found to be a highly effective catalyst for the transesterification of malonic esters with alcs. The treatment of methyl-, ethyl-, or α-substituted malonic esters with primary or secondary alcs. in the presence of a catalytic amount of zinc perchlorate results in good to high yields of the corresponding esters (68%-99%). Mono-transesterification products are also obtained in moderate to good yields (22%-42%). The reaction was also carried out with 2-mono- and di-substituted malonic esters, and in this case the reaction time is, in some cases, shorter, in which the yields are comparable with unsubstituted derivatives The cyanomethyl and bis-cyanomethyl malonic ester derivatives are also used for transesterification and the corresponding products are obtained in high yields. No reaction occurs with the CN group during the reaction. In the experiment, the researchers used many compounds, for example, malonic acid dibutyl ester (cas: 1190-39-2Name: malonic acid dibutyl ester).
malonic acid dibutyl ester (cas: 1190-39-2) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Name: malonic acid dibutyl ester
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics