When the components of a reaction mixture cannot be quantified by UV-visible spectrophotometry, because the λmax values of their absorption bands overlap, the components can be separated and quantified by spectrodensitometric thin-layer chromatography (SDTLC). In this work an aminolysis reaction mixture in aqueous medium was studied by TLC on silica gel plates with densitometric detection. The reaction, an intramolecular rearrangement involving migration of an acyl group, was studied by monitoring a carbinolamine intermediate for which λmax was identical with those of the substrate and product. SDTLC not only enabled detection of all three components of the mixture when the plate was developed but also enabled detection of covalent and ionic forms of the reaction intermediate by comparison of their absorbance/reflectance spectra with those of structurally related imidazolidine and amidinium salt derivatives, respectively, used as model compounds. Kinetic studies, among others, may also be performed by SDTLC to determine the mechanism of the reaction.
-
J. Sherma , Anal. Chem. 76 (12) (2004) 3251–3262.
Sherma J. , '' (2004 ) 76 Anal. Chem. : 3251 -3262.
-
Sz. Nyiredy (Ed.) Planar Chromatography — A Retrospective View for the Third Millennium, Springer, Budapest, 2001.
'', in Planar Chromatography — A Retrospective View for the Third Millennium , (2001 ) -.
-
Y.S. El-Saharty, M. Andel-Kawy, and M.G. El-Bardicy , Spectrosc. Lett. 34 (3) (2001) 325–334.
El-Bardicy M.G. , '' (2001 ) 34 Spectrosc. Lett. : 325 -334.
-
R.L. Blakey and S.J. Benkovic (Eds), Folates and Pteridines, Vol. 1, Wiley, New York, 1984.
'', in Folates and Pteridines, Vol. 1 , (1984 ) -.
-
R.L. Blakey and S.J. Benkovic (Eds), Folates and Pteridines, Vol. 2, Wiley, New York, 1985.
'', in Folates and Pteridines, Vol. 2 , (1985 ) -.
-
K. Singh and H. Singh , Adv. Heterocycl. Chem. 91 (2006) 159
Singh H. , '' (2006 ) 91 Adv. Heterocycl. Chem. : 159 -.
-
R.G. Mathew and J.T. Drummond , Chem. Rev. 90 (1990) 1275.
Drummond J.T. , '' (1990 ) 90 Chem. Rev. : 1275 -.
-
A.M. Reverdito, A. Salerno, I.A. Perillo , and B.M. Fernández , Trends Org. Chem. 8 (2000) 121–127.
Fernández B.M. , '' (2000 ) 8 Trends Org. Chem. : 121 -127.
-
A.M. Reverdito, M. García, A. Salerno, M. Blanco , and I. A. Perillo , Spectrosc. Lett. 34 (3) (2001) 335–343.
Perillo I. A. , '' (2001 ) 34 Spectrosc. Lett. : 335 -343.
-
A. Salerno, V. Ceriani, and I.A. Perillo , J. Heterocycl. Chem. 29 (1992) 1725–1733.
Perillo I.A. , '' (1992 ) 29 J. Heterocycl. Chem. : 1725 -1733.
-
D.H. Clemens, E.Y. Shropshire, and W.D. Emmons , J. Org. Chem. 27 (1962) 3664.
Emmons W.D. , '' (1962 ) 27 J. Org. Chem. : 3664 -.
Monthly Content Usage
| Abstract Views | Full Text Views | PDF Downloads | |
|---|---|---|---|
| Sep 2020 | 0 | 0 | 0 |
| Oct 2020 | 0 | 0 | 0 |
| Nov 2020 | 0 | 0 | 0 |
| Dec 2020 | 0 | 0 | 0 |
| Jan 2021 | 0 | 0 | 0 |
| Feb 2021 | 0 | 0 | 0 |
| Mar 2021 | 0 | 0 | 0 |
Copyright Akadémiai Kiadó
AKJournals is the trademark of Akadémiai Kiadó's journal publishing business branch.
Copyright Akadémiai Kiadó AKJournals is the trademark of Akadémiai Kiadó's journal publishing business branch.
Powered by PubFactory