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Functionalized poly(amidoamine) dendrimer as a strong ionic Brønsted acid organocatalyst for protection/deprotection of aldehydes

Pourjavadi, A ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1080/10426507.2013.855768
  3. Abstract:
  4. Poly(amidoamine) dendrimer (PAMAM) was successfully functionalized by chlorosulfonic acid to form an strong ionic acid catalyst. The resulting polymeric catalyst was shown to be an efficient catalyst for the synthesis of 1,1-diacetyl from aldehydes under free solvent conditions at room temperature. Also, the deprotection of the resulting aldehydes was investigated under catalytic conditions. The Hammett acidity function of catalyst showed that catalyst is a strong Brønsted acid. Due to the multi-functional nature of PAMAM, the catalyst has high loading level of acidic protons
  5. Keywords:
  6. 1,1-diacetyl ; Organocatalyst ; Poly(amidoamine) ; Polymeric catalyst
  7. Source: Phosphorus, Sulfur and Silicon and the Related Elements ; Vol. 189, issue. 12 , 2014 , pp. 1794-1801 ; ISSN: 10426507
  8. URL: http://www.tandfonline.com/doi/abs/10.1080/10426507.2013.855768#.VbcuDbWD4_4