Solvent-free bromination reactions with sodium bromide and oxone promoted by mechanical milling
作者:Guan-Wu Wang、Jie Gao
DOI:10.1039/c2gc16606b
日期:——
New solvent-free brominations of 1,3-dicarbonyl compounds, phenols, various alkenes including chalcones, azachalcones, 4-phenylbut-3-en-2-one, methyl cinnamate, styrene and 1,3-cyclohexadiene were efficiently achieved by employing sodium bromide and oxone under mechanical milling conditions. The brominated products were obtained in good to excellent yields.
Thioglycoluril as a Novel Organocatalyst:
Rapid and Efficient α-Monobromination of 1,3-Dicarbonyl
Compounds
作者:Anxin Wu、Liping Cao、Jiaoyang Ding、Guodong Yin、Meng Gao、Yitao Li
DOI:10.1055/s-0029-1216746
日期:——
Thioglycoluril as a novel hydrogen-bonding organocata- lyst, combined with NBS, in MeOH provided rapid and efficient α-monobromination of 1,3-dicarbonylcompounds in excellent yields at room temperature. A bifunctional catalytic mechanism was proposed from these results.