Solution-phase parallel synthesis of 4,6-diaryl-pyrimidine-2-ylamines and 2-amino-5,5-disubstituted-3,5-dihydro-imidazol-4-ones via a rearrangement
摘要:
The reaction of chalcones and guanidine was investigated in the presence of an oxidizing agent. Depending on the order of the addition either a 4,6-diaryl-pyriniidine-2-ylamine or 2-aniino-5,5-disubstituted-3,5-dihydro-imidazol-4-one was obtained. The structures of the imidazolinones were elucidated by NMR spectroscopy and X-ray crystallography and for its formation a mechanism was proposed. (C) 2003 Published by Elsevier Science Ltd.
The reaction of chalcones and guanidine was investigated in the presence of an oxidizing agent. Depending on the order of the addition either a 4,6-diaryl-pyriniidine-2-ylamine or 2-aniino-5,5-disubstituted-3,5-dihydro-imidazol-4-one was obtained. The structures of the imidazolinones were elucidated by NMR spectroscopy and X-ray crystallography and for its formation a mechanism was proposed. (C) 2003 Published by Elsevier Science Ltd.