59591-90-1Relevant articles and documents
Enhancement for the fluorescent properties of new synthesized GFPs chromophore
Elgendy, Bahaa,Azab,Gamil, Marwa,El-Feky, Hesham H.
, p. 3717 - 3727 (2021/07/10)
An alternative method for the synthesis of new GFP chromophore analogous that possess good photo physical properties which can be used as efficient biomarkers. These compounds have low fluorescence most probably due to their Z–E photo isomerization. These
A phosphine-catalyzed preparation of 4-Arylidene-5-imidazolones
Gabillet, Sandra,Loreau, Olivier,Specklin, Simon,Rasalofonjatovo, Evelia,Taran, Frdric
, p. 9894 - 9898 (2015/01/09)
A simple and efficient method for constructing 4-arylidene-5-imidazolones was developed using a phosphinecatalyzed tandem umpolung addition and intramolecular cyclization of amidine pronucleophiles on arylpropiolates. The reaction offers a robust route to heterocycle analogues of the fluorescent protein chromophores. (Chemical Equation Presented).
Efficient microwave-assisted synthesis and antioxidant activity of 4-arylidene-2-phenyl-1H-imidazol-5(4H)-ones
Shi, Feng,Zeng, Xiao-Ning,Wu, Fei-Yue,Yan, Shu,Zheng, Wei-Fa,Tu, Shu-Jiang
experimental part, p. 59 - 63 (2012/04/23)
The efficient synthesis of 4-arylidene-2-phenyl-1H-imidazol-5(4H)-ones was achieved via microwaveassisted reactions of 4-arylmethylene-2-phenyloxazol-5(4H) -ones with urea in glycol. This approach provides a facile shortcut for the synthesis of this type
INVESTIGATION OF AZLACTONES AND AZLACTAMS BY IR SPECTROSCOPY
Krasovitskii, B. M.,Surov, Yu. N.,Lysova, I. V.,Afanasiadi, L. Sh.
, p. 136 - 139 (2007/10/02)
The IR spectra of a number of azlactones and their structural analogs, viz., azlactams, in solutions in carbon tetrachloride and in chloroform and in the solid phase were obtained.The character of the interaction of the carbonyl group of the heteroring with substituents with different electronic natures has a substantial effect on the frequencies of the stretching vibrations of the carbonyl group and the azomethine and ethylene bonds.The carbonyl frequencies were subjected to correlation analysis, and high conductivity of the electronic effects of substituents in the 2-phenyl-4-arylideneoxazol-5-one series was ascertained.
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.