CONDENSATION OF KETONIC CARBONYL COMPOUNDS WITH CYANOACETIC ESTER IN PRESENCE OF PIPERAZINE DIACETATE

Piperazine diacetate is found to be effective and useful catalyst in the condensation of carbonyl com-pounds with ethyl cyanoacetate (Knoevenagel's reaction) since it can be recovered and purified alter removal of the products of reaction. Examples of its application are given and new compounds farmed in certain cases have been characterised and described