Conjugated Systems Derived from Piperazine-2,5-dione
The preparation of mono- and of symmetrical and unsymmetrical bis-ylidene derivatives of piperazine-2,5-dione is described.The uv-visible absorption of the products is correlated with acceptor/donor character of the substituents.
Katritzky, Alan R.,Fan, Wei-Qiang,Szajda, Maria,Li, Qiao-Ling,Caster, Kenneth C.
p. 591 - 597
(2007/10/02)
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