New Conjugated Systems Derived from Piperazine-2,5-dione
Abdullah Mohamed Asiri
Molecules · 2000
doi:10.3390/50300629 (opens in a new tab)
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Abstract
The preparation of monoarylidene and both symmetrical and unsymmetrical bisarylidene derivatives of piperazine-2,5-dione is described. The use of 1,4-diacetylpiperazine-2,5-dione make it possible to prepare unsymmetrical bisarylidenes. The introduction of a dicyanomethylene moiety into the para position of one of the arylidene groups gave a remarkable deepening in the colour of the resulting compounds 11 and 16.
Abstract licence: CC BY
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