Zr-containing mesoporous silica with high loading amount of zirconia efficiently catalyzes the reaction of dimedone with aldehydes under solvent-free conditions to afford the corresponding octahydroxanthene-1,8-diones in good-to-excellent yields. Zr-containing mesoporous silica samples with a high loading amount of Zr were prepared by sol–gel method and results show that the catalyst with 20 mol% of Zr has better activity than the catalyst with 10 and 30 mol% of Zr. The catalyst can be recovered and reused with moderate loss of activity.
Research on Chemical Intermediates – Springer Journals
Published: Dec 16, 2014
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