Journal
RESEARCH ON CHEMICAL INTERMEDIATES
Volume 43, Issue 1, Pages 29-43Publisher
SPRINGER
DOI: 10.1007/s11164-016-2603-y
Keywords
Heterogeneous catalyst; Natural phosphate; Fluorapatite; Tetraketone; Xanthene
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Funding
- Payame Noor University (PNU)
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Natural phosphate was applied as an efficient and ecofriendly catalyst for the synthesis of tetraketones (2-2.5 h, 90-100 %) and xanthenes (6.5-8.5 h, 84-95 %) via Knoevenagel-Michael cascade reaction of aromatic aldehydes with 1,3-cyclic diketones in water and ethanol, respectively. This protocol provides several advantages over the traditional chemical synthesis, such as simple work-up, easy handling procedure, non-toxicity and stability of catalyst, low cost and environmental friendliness.
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