Synthesis of stable oxazolidine nitroxyl radicals with methoxy groups at the ?-carbon atoms to the radical site
摘要:
The condensation of alpha-hydroxyaminoalcohols with aldehydes and acetone gave 3-hydroxyoxazolidines and tautomeric N-(2-hydroxyethyl)-alpha-arylnitrones, whose oxidation by PbO2 in methanol leads to stable oxazolidine nitroxyl radicals with methoxy groups at C2 and C4.
Reaction of α-Hydroxyamino Ketones with Dicarbonyl Compounds – Synthesis of Imidazoline Nitroxides with a Functional Group in a Side Chain
作者:Vladimir A. Reznikov、Leonid B. Volodarsky
DOI:10.1002/jlac.199719970537
日期:1997.5
The reaction of α-hydroxyamino ketones 1 with diacetyl, acetyl acetone or acetoacetic ester in the presence of ammonium acetate results in the formation of 3-imidazoline derivatives 2, which are precursors for the synthesis of stable nitroxides 8, 9, 14, 16, 17, 23–24 with various functional groups in the side chain at the 2-position of the heterocycle.