کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
50327 | 46789 | 2011 | 7 صفحه PDF | دانلود رایگان |

A new silica based piperidine derivative has been designed, synthesized and characterized by solid state carbon 13 CP MAS NMR, BET surface area analysis, IR, TGA studies, elemental analysis and pH experiment. This has been efficiently utilized as a recyclable catalyst for both homo and hetero bis-Knoevenagel condensation products in aqueous-ethanol. This is the first report of the synthesis of hetero bis-Knoevenagel condensation products by our designed catalyst.
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► Synthesis and characterization of heterogeneous silica based piperidine catalyst.
► Utilization for the synthesis of bis-homo and bis-hetero Knoevenagel products.
► Recyclability of the solid catalyst at least upto eight cycles.
► Sequential addition of the active methylene compounds afforded bis-hetero products.
Journal: Catalysis Communications - Volume 12, Issue 15, 15 September 2011, Pages 1496–1502