ChemInform Abstract: Synthesis and Biological Activity of Some Novel Amino Acid and Phosphazane Derivatives of 7‐Hydroxy‐4‐methylcoumarin.

Abstract

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Synthesis of 7-Hydroxy-4-methyl Coumarin Under Microwave Irradiation

“…Sulfuric acid as catalyst used in the synthesis methods of coumarin in industry, but it corrode the equipment and pollution the environment seriously. In recent years, new type of catalysts appeared in the synthesis of coumarin, such as ion exchange resin, solid super acid and ionic liquids [4][5][6][7] . However, they present some issues e.g., high cost, harsh reaction conditions and complex operation.…”

Synthesis of 7-hydroxy-4-methyl Coumarin with Microwave Radiation Catalyzed by Zirconium Sulfate Tetrahydrate

“…Sulfuric acid as catalyst is the synthesis methods of coumarin in industry, but it corrosion the equipment and pollution the environment seriously. In recent years, new type catalysts appeared ceaselessly in the synthesis of coumarin, such as ion exchange resin, solid super acid and ionic liquid [4][5][6][7] .However,they present some issues :high cost, harsh reaction conditions and complex operation. Microwave technique is widely used in organic synthesis.…”