TY - JOUR ID - 85819 TI - Synthesis of bis coumarinyl methanes using of potassium 2-oxoimidazolidine-1,3-diide as a novel, efficient and reusable catalyst JO - Chemical Review and Letters JA - CRL LA - en SN - 2676-7279 AU - Nikpassand, Mohammad AU - Zare Fekri, Leila AD - aDepartment of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran AD - bDepartment of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, Iran Y1 - 2019 PY - 2019 VL - 2 IS - 1 SP - 7 EP - 12 KW - Coumarin KW - Potassium 2-oxoimidazolidine-1 KW - 3-diide KW - Multicomponent reaction KW - 4-Hydroxycoumarin DO - 10.22034/crl.2019.85819 N2 - At first, potassium 2-oxoimidazolidine-1,3-diide (POImD) was prepared of stirring a mixture of imidazolidin-2-one, KOH and H2O overnight. Then, Potassium 2-oxoimidazolidine-1,3-diide was used as a green, novel, fast, efficient and mild catalyst for the synthesis of bis coumarinyl methanes via a one-pot reaction of one equivalent of various aromatic aldehydes and two equivalents of 4-hydroxycoumarin at room temperature in aqueous media. All reactions are performed in the absence of organic solvent in high to excellent yield during short reaction time. The procedure was readily conducted and affords remarkable advantages such as simple work-up, green media and eco-friendly procedure. The catalyst was recovered and reused. Apart from the mild conditions of the process and its excellent results, the simplicity of product isolation and the possibility to recycle the catalyst offer a significant advantage. To the best of our knowledge this is the first report on synthesis of POImD. All of synthesized compounds were characterized by IR, 1H and 13C NMR spectroscopy and elemental analyses. UR - https://www.chemrevlett.com/article_85819.html L1 - https://www.chemrevlett.com/article_85819_14373b6eaa87d1c6de6a9fd5ca2679e0.pdf ER -