ZrOCl2 Catalysed Chemoselective Conversion of Aldehydes to geminal-Diacetates and Their Cleavage： A Mild and Efficient Method  

作　　者：NAGARAJ, Adki SANJEEVA REDDY, Cherkupally 

机构地区：[1]Department of Chemistry, Kakatiya University, Warangal-506 009, India

出　　处：《Chinese Journal of Chemistry》2007年第10期1555-1558,共4页中国化学（英文版）

摘　　要：ZrOCl2 was found to be an effective Lewis acid catalyst for the solventless chemoselective conversion of aldehydes into geminal-diacetates in high yields at room temperature. Regeneration of the aldehydes from the acetals was also achieved using the same catalyst in water. The beneficial effect of microwave irradiation on the reaction was also described. Other advantages are the very low loading of catalyst, high yields achieved even on a gram scale, and considerably shortened reaction time compared to the conventional method.ZrOCl2 was found to be an effective Lewis acid catalyst for the solventless chemoselective conversion of aldehydes into geminal-diacetates in high yields at room temperature. Regeneration of the aldehydes from the acetals was also achieved using the same catalyst in water. The beneficial effect of microwave irradiation on the reaction was also described. Other advantages are the very low loading of catalyst, high yields achieved even on a gram scale, and considerably shortened reaction time compared to the conventional method.

关 键 词：zirconium oxychloride ACETAL CHEMOSELECTIVE microwave irradiation 

分 类 号：O623[理学—有机化学]