Chinese Journal of Catalysis ›› 2012, Vol. 33 ›› Issue (7): 1095-1100.DOI: 10.1016/S1872-2067(11)60383-5

• Research papers • Previous Articles     Next Articles

Silica-Bonded N-Propyl Diethylenetriamine Sulfamic Acid as a Recyclable Solid Acid Catalyst for the Synthesis of α-Aminonitriles

Tahere RAHI1, Mojtaba BAGHERNEJAD1, Khodabakhsh NIKNAM2,*   

  1. 1Department of Chemistry, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran; 2Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran
  • Received:2012-01-15 Revised:2012-02-23 Online:2012-06-21 Published:2012-06-21

Abstract: Silica-bonded N-propyl diethylenetriamine sulfamic acid (SBPDSA) is employed as a recyclable catalyst to synthesize α-aminonitriles. These syntheses involved one-pot condensation of an aldehyde, an amine, and trimethylsilyl cyanide under mild reaction conditions at room temperature. SBPDSA was recycled seven times in the condensation of benzaldehyde, aniline, and trimethylsilyl cyanide without reduction of its catalytic activity.

Key words: silica-bonded N-propyl diethylenetriamine sulfamic acid, α-aminonitrile, solid acid, aldehyde, heterogeneous catalyst