VO(acac)_2 catalyzed condensation of o-phenylenediamine with aromatic carboxylic acids/aldehydes und

• 作 者: Madhudeepa Dey Krishnajyoti Deb Siddhartha Sankar Dhar
• 机 构: Department of Chemistry,National Institute of Technology,Silchar,Silchar 788010,Assam,India,
• 出 处: Chinese Chemical Letters
• 发表日期: 2011年03期
• 关键词: carboxylic aromatic microwave aldehydes VO acac condensation catalyzed aldehyde

Vanadyl acetylacetonate,VO(acac)_2,has been found to be very effective catalyst for synthesis of a variety of benzimidazoles under solvent-free condition.The methodology involves the exposure of a mixture of o-phenylenediamine and a selected aromatic carboxylic acid/aldehyde to microwave radiation without the use of any solvent or supporting agents.The benzimidazoles were obtained in quick time with high yields.

Vanadyl acetylacetonate, VO (acac) _2, has been found to be very effective catalyst for synthesis of a variety of benzimidazoles under solvent-free conditions. The methodology involves the exposure of a mixture of o-phenylenediamine and a selected aromatic carboxylic acid / aldehyde to microwave radiation without the use of any solvent or supporting agents. The benzimidazoles were obtained in quick time with high yields.