Tribromo melamine (TBM) as an efficient and inexpensive catalyst for the one-pot synthesis of benzimidazoles and benzoxazole derivatives
Journal: Asian Journal of Green Chemistry (Vol.2, No. 2)Publication Date: 2018-02-15
Authors : Parisa Shirkhani; Hamed Seifournia; Ehsan Mirzajanzadeh; Marzieh Rekavandi; Saeid Afshari Sharif Abad; Marziyeh Sarayloo; Zahra Malkeshi; Sakineh Rostamian Tuyehdarvary;
Page : 160-170
Keywords : Tribromo melamine; Homogeneous catalyst; Benzimidazole; Benzoxazole; Green solvent;
- Tribromo melamine (TBM) as an efficient and inexpensive catalyst for the one-pot synthesis of benzimidazoles and benzoxazole derivatives
- Yttrium Aluminum Garnet (YAG: Al5Y3O12) as an Efficient Catalyst for the Synthesis of Benzimidazole and Benzoxazole Derivatives
- Zinc Sulfide (ZnS) Nanoparticles: An Effective Catalyst for Synthesis of Benzoxazole Derivatives
- Synthesis of Benzoxazole Derivatives Using Fe3O4@SiO2-SO3H Nanoparticles as a Useful and Reusable Heterogeneous Catalyst Without Using a Solvent
- Melamine trisulfonic acid as a highly efficient catalyst for the synthesis of polyhydroquinolines under solvent-free conditions
Abstract
In this work, a simple and facile method for the preparation of tribromo melamine (TBM or melamine‐Br3) as an environmentally friendly homogeneous catalyst is described as it is used for the one-pot synthesis of benzimidazoles and benzoxazole derivatives via condensation reactions between aromatic aldehydes and ortho‐phenylenediamine or ortho‐aminophenol in aqueous media conditions. This green method offers significant advantages in terms of its simplicity, high catalytic efficiency, good to excellent product yields, use of ethanol as a green solvent, mild conditions, eco-friendly, and in acceptable reaction times.
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Last modified: 2018-02-15 16:27:07