Abstarct: Diuracilopyrans have several biological properties. Thus, the development of a new method is desirable for constructing diuracilopyrans. The reactions of aldehydes and barbituric acids at low temperatures in magnetized water, as a green-promoting medium, provides 9-substituted-9H-diuracilopyransin high-to-excellent yields. This method offers some advatages such as short reaction times, simplicity, low costs, high reaction yields, easy work-up, green and no need for any organic solvents.