42471-19-2Relevant academic research and scientific papers
Synthesis of 3-Bromo-4H-pyran-4-ones, 4-Pyridones and Their Thio Analogues
Marei, Mohamed Gaber,Mishrikey, Morkos Michael,El-Kohly, Ibrahim El-Sayed
, p. 225 - 228 (2007/10/02)
Bromination of 1,5-diarylpent-1-yne-3,5-diones (1) with NBS or bromine gives 2,6-diaryl-3-bromo-4H-pyran-4-ones (3) which are converted into the corresponding 4-thiones (4).The latter on treatment with hydroxylamine furnish the respective 3-bromo-oximes (
