Nano-Silica phosphoric acid: an efficient catalyst for one-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones (thiones) under solvent-free or sonication conditions

Authors

  • Abdolhamid Bamoniri Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I.R.Iran.
  • Bi Bi Fatemeh Mirjalili Department of Chemistry, College of Science, Yazd University, I. R. Iran .
  • Sedigheh Nazemian Department of Chemistry, College of Science, Yazd University, I. R. Iran .
Abstract:

Two simple protocols for the synthesis of three-component condensation reaction of an aldehyde, β-ketoester and urea or thiourea to obtain the 3, 4-dihydropyrimidin-2(1H)-ones (thiones) using nano silica phosphoric acid are reported. Short reaction times, high yields, reusability of catalyst and easy workup are some advantages of these protocols.

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Journal title

volume 2  issue 1

pages  17- 21

publication date 2012-01-01

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