Abstract
The condensation reaction of isomeric N -substituted (1 H -pyrazol-4-yl)ethanones with the ethyl esters of pyrazole carboxylic acids and fluoroacetic acids has been studied using NaH as the base. Under optimized conditions, it proved to be a convenient and preparative method for the synthesis of N -substituted (1 H -pyrazolyl)propane-1,3-diones and (1 H -pyrazolyl)-4-polyfluorobutane-1,3-diones. Authors: I. V. Taydakov and S. S. Krasnoselsky English translation in Chemistry of Heterocyclic Compounds , 2011, 47 (6), pp 695-699 http://link.springer.com/article/10.1007/s10593-011-0821-1
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