Microwave-assisted Knoevenagel condensation in aqueous over triazine-based microporous network

作者：Ansari Mohd Bismillah; Parvin Mst Nargis; Park Sang Eon^*

来源：Research on Chemical Intermediates, 2014, 40(1): 67-75.

DOI：10.1007/s11164-013-1456-x

• Triazine
• Microporous polymer network
• Aqueous media
• Knoevenagel condensation
• Microwave

A high nitrogen-containing triazine-based microporous polymeric (TMP) network was used as an efficient metal-free catalyst for Knoevenagel condensation of ethylcyanoacetate with aromatic aldehydes. The reactions were performed in water as an environmentally benign medium, under microwave irradiation within a short reaction time of 10 min. The conversions of substituted aromatic aldehydes and selectivities for Knoevenagel products were found to be in the ranges of 44-99 and 65-99 %, respectively. The electron-withdrawing substituent showed higher conversion and selectivity as compared to electron-donating substituents. The TMP network can be readily recovered and reused up to three runs without loss in catalytic activity and selectivity.

• 出版日期2014-1