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Title: Formation and thermal rearrangement of 4,4′-diarylmethyl-2,2′-diaryl- 4,4′- biimidazolin-5,5′-diones
Authors: Begum, T Shalina
Sobha, T D
Shafi, P M
Keywords: 4-Arylmethyl-2-aryl-2-imidazolin-5-one;Dimerisation;Mass spectral fragmentation;Thermal rearrangement;4-arylidene-2-aryl-2-imidazolin-5-one;4,4′-diarylmethyl-2,2′-diaryl-4,4′-biimidazolin-5,5′-diones
Issue Date: Nov-2014
Publisher: NISCAIR-CSIR, India
Abstract: 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.
Page(s): 1468-1470
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-B Vol.53B(11) [November 2014]

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