Transesterification of malonic esters was written by Bondar, L. S.;Rodionov, P. P.;Okunev, R. A.. And the article was included in Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya in 1968.Recommanded Product: malonic acid dibutyl ester This article mentions the following:
Transesterification of malonic esters with various types of alcs. in the presence of alk. and acidic catalysts has been studied. Transesterification of esters catalyzed by alkali proceeds according to an SN2 mechanism and, when catalyzed by acids, proceeds according to a polycentric mechanism. In the former case transesterification of malonic ester (I) is facilitated by enolization of I and in the later case, by the formation of a cyclic intermediate. The corresponding alc. and the catalysts are heated to solution and then a lower ester of malonic acid (dimethyl, diethyl, or dipropyl) is added and the mixture boiled. The alc. formed in the reaction is continuously distilled The reaction is considered complete as soon as the alc. added in the beginning begins to distill. Eleven esters of malonic acid CH2(CO2R)2 (R = n-Pr, n-Bu, sec-Bu, n-C5H11), n-C6H13, cyclohexyl, n-C7H15, PhCH2, n-C9H19, or n-C10H21) were obtained in good yields (69.9 to 96.6%), their physicochem. constants agreed well with those reported in the literature. Transesterification proceeds easily if the difference in the b.ps. of the alc. taken and the alc. formed in the reaction is large. In the experiment, the researchers used many compounds, for example, malonic acid dibutyl ester (cas: 1190-39-2Recommanded Product: 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. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Recommanded Product: malonic acid dibutyl ester
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics