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Carel J. van Oss 《Preparative biochemistry & biotechnology》2013,43(1):105-106
Abstract A series of 3,4‐dihydropyrimidin‐2‐(1H)‐ones compounds was synthesized efficiently by a one‐pot cyclocondensation of an aldehyde, 1,3‐dicarbonyl compound, and urea in absolute ethanol under refluxing temperature using praseodymium methanesulfonate as catalyst. After the reaction, the catalyst can be easily recovered and reused several times without distinct decrease in reaction yields. 相似文献
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《Applied animal behaviour science》1988,21(4):383-385