Silica gel supported InBr3 and InCl3: new catalysts for the facile and rapid oxidation of 2′-hydroxychalcones and flavanones to their corresponding flavones under solvent free conditions
作者:Naseem Ahmed、Hasrat Ali、Johan E. van Lier
DOI:10.1016/j.tetlet.2004.11.062
日期:2005.1
Silica gel supported InBr3 or InCl3 (15–20 mol %) were explored as a new solid-support catalysts for the facile and efficient oxidation, under solvent free conditions, of 2′-hydroxychalcones and flavanones to yield the corresponding flavones in >80% yield. The catalysts are easily prepared, stable, and efficient under mild reaction conditions.
硅胶负载的InBr 3或InCl 3(15–20 mol%)被研究为一种新型的固体载体催化剂,可在无溶剂条件下方便,有效地氧化2'-羟基查耳酮和黄烷酮,以产生>的相应黄酮。 80%的产率。在温和的反应条件下,该催化剂易于制备,稳定且有效。