Silica gel: A very cheap, reusable, and efficient catalyst for green preparation of some bis-4-hydroxycoumarin on water

Authors

• Saeed Khodabakhshi ¹
• Mojtaba Baghernejad ²

1. Department of Chemistry, Yasouj University, Yasouj, Zip Code: 75918-74831 P.O. Box 353, Iran.
2. Young and Reasearcers Elite, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran

Abstract

Silica gel has been used for synthesis of biscoumarin derivatives starting from 4-hydroxycoumarin and aryl aldehydes. The reaction conditions are completely in agreement with green chemistry principles including sing water as media and a recyclable and safe catalyst. This method is also simple and inexpensive and leads to high yield of products in short reaction times.

Keywords

• Aldehyde
• Biscoumarin
• Catalyst
• Silica gel
• Water