Synthesis of β-enaminodicarbonyl derivatives in the titanium(iv) chloride-promoted reactions of β-dicarbonyl compounds with nitriles†
Abstract
Titanium(IV) chloride selectively promoted the nucleophilic attack of ethyl acetoacetate with nitriles to give enaminoketoesters, which were valuable intermediates for the syntheses of 2,3,4-substituted heterocyclics. Moreover a plausible mechanism for this transformation was given.