Document Details Document Type : Article In Journal  Document Title : New conjugated systems derived from piperazine-2,5-dione New conjugated systems derived from piperazine-2,5-dione   Document Language : Arabic  Abstract : The preparation of monoarylidene and both symmetrical and unsymmetrical bis-arylidene 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.  Journal Name : MOLECULES  Volume : 5  Issue Number : 3  Publishing Year : 2000 AH   Added Date : Saturday, June 14, 2008  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email أ.د.عبد الله بن محمـد أحمـد عسيــــري   Researcher     Back To Researches Page