19508-15-7Relevant academic research and scientific papers
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.
Synthesis of Acylamino Acid Amides and Acylamino Acids via 2,4-Disubstituted 2-Imidazolin-5-ones
Devasia, Ganapathiplackal M.,Shafi, P. Mohamed
, p. 70 - 72 (2007/10/02)
Unsaturated 2,4-disubstituted 2-imidazolin-5-ones (I) have been reduced with a mixture of hydriodic acid and red phosphorus in the presence of acetic anhydride to give the saturated 2,4-disubstituted 2-imidazolin-5-ones (II) which have been hydrolysed to acylamino acid amides (III) and acylamino acids (IV) with sodium hydroxide solution under different conditions.In all six acylamino acid amides (23 - 51percent yields) and four acylamino acids (26 - 65percent yields) have been prepared.One saturated 2-imidazolin-5-one, namely 2-phenyl-4-benzyl-2-imidazolin-5-one has been isolated from the reaction in 40percent yield and identified.
