174654-67-2Relevant academic research and scientific papers
Enzymatic Synergism in the Synthesis of β-Keto Esters
Wisniewska, Catalina,Koszelewski, Dominik,Zysk, Malgorzata,Klossowski, Szymon,Zdlo, Anna,Brodzka, Anna,Ostaszewski, Ryszard
, p. 5432 - 5437 (2015)
Reaction of alcohols with ethyl and tert-butyl acetoacetate catalyzed by a combination of commercially available enzymes is shown to be a convenient method for the preparation of a range of acetoacetic acid derivatives. Systematic studies proved that the combination of two or more enzymes enhances the yield of the reaction. Application of the selected enzyme mixture for enzymatic transesterification of various β-keto esters provided the respective products in excellent yields up to 96% and quantitative within 24 and 48 hours, respectively. The presented methodology is simple and mild, and can be used to prepare acetoacetates from primary and secondary alcohols. Application of a selected enzyme mixture for enzyme-catalyzed esterification of various carboxylic acids provided the respective β-hydroxy esters in excellent yields up to 96% and quantitative within 24 and 48 hours, respectively.
Synthesis and smooth muscle calcium channel antagonist effects of dialkyl 1,4-dihydro-2,6-dimethyl-4-aryl-3,5-pyridinedicarboxylates containing a nitrooxy or nitrophenyl moiety in the 3-alkyl ester substituent
Iqbal, Nadeem,Knaus, Edward E.
, p. 23 - 26 (1996)
A group of racemic 3-[2-nitrooxyethyl (1,3-dinitrooxy-2-propyl or 4-nitrophenylethyl)] 5-isopropyl 1,4-dihydro-2,6-dimethyl-4-[2-trifluoromethylphenyl (2-nitrophenyl or 3-nitrophenyl)]-3,5-pyridinedicarboxylates 13-15 were prepared using the Hantzsch reac
