Regioselective phosphorylation of α-N-alkylamino ketones |
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Authors: | S E Pipko Yu V Balitsky N V Simurova A D Sinitsa |
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Institution: | (1) Institute of Organic Chemistry, National Academy of Sciences of the Ukraine, 5 ul. Murmanskaya, 02660 Kiev-94, Ukraine |
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Abstract: | General preparative methods for regioselective functionalization of α-amino ketones with organophosphorus reagents were developed.
Stable phosphorylated derivatives of all their prototropic forms (α-amino ketones, α-hydroxy imines, and β-hydroxy enamines)
were obtained for the first time. The relative thermodynamic stability sequence of α-amino ketones was found to be reversed
upon their phosphorylation: O-substituted forms were more stable than N-substituted ones, in contrast to the equilibrium between the prototropic isomers.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 288—293, February, 2006. |
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Keywords: | α -amino ketones α -hydroxy imines β -hydroxy enamines phosphorylation tautomerism thermodynamic stability |
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