A new procedure using lithium chloride in hexamethylphosphoramide was found to be useful for the synthesis of Michael-type adducts and cyclic enones. Selectivity for the two products could be controlled by altering the reaction temperature employed. The urea-type solvents were also examined instead of hexamethylphosphoramide.
一种使用
氯化锂和六甲基
磷酰胺的新程序被发现对迈克尔型加成物和
环己烯酮的合成非常有用。通过改变反应温度,可以控制两种产品的选择性。此外,还研究了以
脲类溶剂替代六甲基
磷酰胺的情况。