Synthesis of amino acids and related compounds. 42. A novel transformation of imidazolines into 2,4,6-trisubstituted pyrimidine derivatives
摘要:
2,5-Diaryl-4-(chloromethyl)imidazoline derivatives 5a-g, obtained from N-acyl-alpha-amino ketone derivatives 1, were rearranged with sodium hydride in dimethylformamide. Spontaneous air oxidation led to 2,4-di- and 2,4,6-triarylpyrimidine derivatives 6a-g in good yields.
2,4,6-Triarylpyrimidines are synthesized via a simple, one-pot, four-component reaction between aryl methyl ketones, benzaldehydes, aromatic nitriles, and hydroxylamine under microwave irradiation and solvent-free conditions in good to excellent yields. (c) 2006 Published by Elsevier Ltd.