α-Diazoketones undergo readily O–H insertion reactions with alcohols and water in hydrophilic [bmim]BF4 ionic liquid in the absence of any acid catalyst to furnish α-alkoxy and α-hydroxy ketones in excellent yields under neutral conditions. The recovered ionic liquid can be easily reused in four to five cycles with consistent in activity. The use of ionic liquid helps to avoid the use of acid catalysts as well as environmentally unfavorable volatile organic solvents.
在亲
水性 [bmim]BF4
离子液体中,在没有任何酸催化剂的情况下,α-重
氮酮很容易与醇和
水发生 O-H 插入反应,从而在中性条件下生成产率极高的α-烷氧基酮和α-羟基酮。回收的
离子液体可以很容易地重复使用四到五次,且活性始终如一。使用
离子液体有助于避免使用酸性催化剂和不利于环境的挥发性有机溶剂。