Synthesis of 4-imidazolin-2-ones from α-bromo ketimines
作者:Norbert De Kimpe、Dirk De Smaele、Elena Stanoeva、Bernard Tinant、Jean-Paul Declercq
DOI:10.1002/recl.19941130504
日期:——
A novel synthesis of 1,4-dialkyl-5-aryl-4-imidazolin-2-ones 3 has been achieved by reaction of α-bromo ketimines 2 with potassium cyanate in dimethylformamide. The structural assignment of these heterocycles was performed by spectrometric methods, comparison with a known compound and X-ray crystallographic analysis of the acetyl derivative 8.