79957-46-3Relevant academic research and scientific papers
Formation and thermal rearrangement of 4,4'-diarylmethyl- 2,2'- diaryl-4,4'-biimidazolin-5,5'-diones
Begum, T. Shalina,Sobha,Shafi
, p. 1468 - 1470 (2014/12/11)
Recrystallisation of 4-arylmethyl-2-aryl-2-imidazolin-5-ones from ethanol results in the formation of 4,4'-diarylmethyl-2,2'-diaryl-4,4'-biimidazolin-5,5'-diones. These products undergo a McLafferty type rearrangement to give one molecule of 4-arylmethyl-2-aryl-2-imidazolin-5-one and one molecule of 4-arylidene-2-aryl-2-imidazolin-5-one under mass spectrometric conditions. The same rearrangement is also found to occur on heating the compounds just above their melting points.
A Convenient Synthesis of Unsaturated 2,4-Disubstituted 2-Imidazolin-5-ones
Devasia, Ganapathiplackal M.,Shafi, P. Mohamed
, p. 657 - 660 (2007/10/02)
Twenty five unsaturated 2,4-disubstituted 2-imidazolin-5-ones (IV) have been prepared in 23-71percent yields by condensing aromatic aldehydes with a mixture of ethyl chloroacetate and an aromatic amidinium chloride in the presence of sodium hydrogencarbonate.Twenty three of them have also been prepared in 62-97percent yields by this method using ethyl bromoacetate instaed of the chloroacetate.Further, two unsaturated 2-imidazolin-5-ones (IV) have been prepared by these two methods using cyclohexanone (yields 33percent each) and cinnamaldehyde (yields 0 and 18percent) instead of the aromatic aldehydes.
