DBU-functionalized MCM-41-coated nanosized hematite (DBU-F-MCM-41-CNSH): A new magnetically separable basic nanocatalyst for the synthesis of some nucleoside-containing heterocycles
作者： Reza Kordnezhadian , Mohsen Shekouhy , Somaye Karimian , Ali Khalafi-Nezhad
DOI: 10.1016/J.JCAT.2019.10.020
关键词: Combinatorial chemistry 、 Catalysis 、 Hematite 、 Chemistry 、 Nucleoside 、 Solid material 、 Mesoporous material 、 MCM-41 、 Organic synthesis
摘要: Abstract DBU-functionalized MCM-41-coated nanosized hematite (DBU-F-MCM-41-CNSH) was successfully prepared as a new magnetically separable and reusable mesoporous basic nanocatalyst characterized by various techniques such FT-IR, XRD, HR-TEM, FESEM, BET, VSM elemental analyses (CHN ICP-OES). The then applied for the synthesis of some nucleoside-containing pyrido[2,3-d]pyrimidines, [2,3-d:6,5-d′]dipyrimidine pyrimido[4,5-b]quinolines via one-pot multicomponent reactions under solvent-free conditions. In all cases, catalyst recovered reused several times without any changes in chemical physical structures well catalytic activity. biggest achievement this research is conversion DBU widely used organic from toxic, not-recyclable funky liquid to recoverable solid material with same characters.
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