Document Type : Original Research Article
Authors
- Sami Sajjadifar 1
- Issa Amini 2
- Hadi Jabbari 3
- Omidali Pouralimardan 3
- Mohammad Hossein Fekri 4
- Kaushik Pal 5
1 Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran.
2 Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
3 Department of Chemistry, Payame Noor University, PO box 19395-3197, Tehran, Iran
4 Department of Chemistry, Ayatollah Alozma Borujerdi University, Borujerd, Iran.
5 Department of Nanotechnology, Bharath University,BIHER Research Park, Chennai, Tamil Nadu 600073, India
Abstract
1-Methyl-3-(2-oxyethyl)-1H-Imidazol-3-ium-Borate Sulfonic Acid ([MOEI]-BSA) was easily prepared and used as a new and highly efficient solid acid catalyst for the synthesis of benzimidazole derivatives with high isolated yields. Various substituted benzimidazoles were synthesized by a combination of o-phenylenediamines and aldehydes in the presence of [MOEI]-BSA with excellent yields in water and under a mild and green reaction conditions. This method is also applicable for precursors such as aromatic and unsaturated aldehydes and o-phenylenediamines. Addition of organic part to BSA and synthesis of [MOEI]-BSA as a new Bronsted acidic ionic liquid (BAIL) improved the efficiency of this catalyst.
1-Methyl-3-(2-oxyethyl)-1H-Imidazol-3-ium-Borate Sulfonic Acid ([MOEI]-BSA) was easily prepared and used as a new and highly efficient solid acid catalyst for the synthesis of benzimidazole derivatives with high isolated yields. Various substituted benzimidazoles were synthesized by a combination of o-phenylenediamines and aldehydes in the presence of [MOEI]-BSA with excellent yields in water and under a mild and green reaction conditions. This method is also applicable for precursors such as aromatic and unsaturated aldehydes and o-phenylenediamines. Addition of organic part to BSA and synthesis of [MOEI]-BSA as a new Bronsted acidic ionic liquid (BAIL) improved the efficiency of this catalyst.
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