Transesterification of β-ketoesters with various alcohols has been studied under conventional and non-conventional conditions using desktop chemicals such as Mn(II) salts as catalysts. These methods offered transesterification of β-ketoesters in good yields with dramatic rate accelerations and reduced reaction times. The developed protocols under nonconventional methods such as sonication and microwave
Derivatives of acetoacetic acid. Part VIII. The synthesis of coumarins from aryl acetoacetates
作者:R. N. Lacey
DOI:10.1039/jr9540000854
日期:——
Prussian Blue as an Efficient Catalyst for Rate Accelerations in the Transesterification of β-Ketoesters
作者:P. Srinivas、K. C. Rajanna、G. Krishnaiah、M. Satish Kumar、J. Narender Reddy
DOI:10.1080/15533174.2013.799488
日期:2014.9.14
Prussian blue triggered transesterification of ethylacetoacetate with various alcohols underwent efficiently. The reaction is mild, eco-friendly, and selective with good yields. The proposed reaction pathway depicts the formation of an intermediate by the interaction of beta-ketoesters with catalytic site of the Prussian blue, followed by nucleophilic attack of the alcohol at the electrophilic center followed by successive elimination of the proton to give the product. Observed longer reaction times under conventional conditions reduced amazingly under sonication and microwave irradiation followed enhanced yield of products.
Rall'; Perekalin, Zhurnal Prikladnoi Khimii, 1952, vol. 25, p. 1330; engl. Ausg. S. 1391
作者:Rall'、Perekalin
DOI:——
日期:——
Rall'; Perekalin, Zhurnal Obshchei Khimii, 1955, vol. 25, p. 815,819; engl. Ausg. S. 781, 785