Conversion of α,β-unsaturated ketones to 1,5-diones via tandem retro-Aldol and Michael addition using Co(acac)2 covalently anchored onto amine functionalized silica
作者:Ravinderpal Kour Sodhi、Satya Paul、Vivek K. Gupta、Rajni Kant
DOI:10.1016/j.tetlet.2015.02.057
日期:2015.4
A new and efficient method has been developed for the conversion of α,β-unsaturated ketones to 1,5-diketones via tandem retro-Aldol and Michael addition in the presence of Co(acac)2 covalently anchored amine functionalized silica [AS-Co(acac)2]. The single crystal X-ray crystallography confirms the formation of 1,5-diketones. This method has been proved to be an attractive alternative to existing methodologies
在Co(acac)2共价锚定胺官能化二氧化硅[AS-Co]存在下,已开发出一种新的高效方法,用于通过串联逆向Aldol和Michael加成将α,β-不饱和酮转化为1,5-二酮。(acac)2 ]。单晶X射线晶体学证实了1,5-二酮的形成。在常规的均相催化下,该方法已被证明是对现有方法的一种有吸引力的替代方法,并且具有麻烦的操作和后处理工作。发现AS-Co(acac)2具有很高的活性,可以连续四次循环使用,但活性略有下降。