Borate Zirconia Mediated Knoevenagel Condensation Reaction in Water 


Vol. 49,  No. 4, pp. 377-0, Aug.  2005
10.5012/jkcs.2005.49.4.377


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  Abstract

4-Oxo-(4H)-1-benzopyran-3-carbaldehydes, 1,3-diphenyl-1H-pyrazol-4-carboxaldehyde 및 방향족 알데하이드와의 3-methyl-1-phenylpyrazolin-5-(4H)-one의 Borate Zirconia (23/Zr2) 산을 촉매로 사용하여 수용액 상에서 Knoevenagel 축합 반응을 수행하여 생성물을 높은 수득율로 얻을 수 있었다. 각각의 반응에서 촉매는 수거되었고, 수거 후에 수득률과 선택성에서의 손실없이 재 사용을 하였다. Knoevenagel condensation of 4-oxo-(4H)-1-benzopyran-3-carbaldehydes, 1,3-diphenyl-1H-pyrazol-4- carboxaldehyde and aromatic aldehyde has been carried out with 3-methyl-1-phenylpyrazolin-5-(4H)-one as condensing agent in moderate to good yields by using Borate Zirconia (23/Zr2) solid acid catalyst in water medium. In each conversion, the catalyst was successfully recovered and recycled without significant loss in yield and selectivity.

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  Cite this article

[IEEE Style]

S. S. Shindalkar, B. R. Madje, R. V. Hangarge, P. T. Patil, M. K. Dongare, M. S. Shingare, "Borate Zirconia Mediated Knoevenagel Condensation Reaction in Water," Journal of the Korean Chemical Society, vol. 49, no. 4, pp. 377-0, 2005. DOI: 10.5012/jkcs.2005.49.4.377.

[ACM Style]

Santosh S. Shindalkar, Balaji R. Madje, Rajkumar V. Hangarge, Pratap T. Patil, Mohan K. Dongare, and Murlidhar S. Shingare. 2005. Borate Zirconia Mediated Knoevenagel Condensation Reaction in Water. Journal of the Korean Chemical Society, 49, 4, (2005), 377-0. DOI: 10.5012/jkcs.2005.49.4.377.

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ISSN(Print) 1017-2548
ISSN(Online) 2234-8530