Synthesis of som ethers coumarin via green method

Two ethers coumarin derivatives: 7-phenoxy -4-carboxylic coumarin (B) and 7- (6,2-di-chloro) -4-carboxylic coumarin (C) have been synthesized from the 7-hydroxy-4-methy coumarin (A) as beginning compound and the copper complex [CuPPh3Cl]4 carried on the amberlyst-21 as the eco-friendly catalyst, these ethers coumarin derivatives have an important biological properties may be used in the treatment of breast cancer.

Study of the synthesis of some Indomethacin derivatives

In this research two Indomethacin derivatives were synthesized, Indomethacin ethyl ester was synthesized by The Direct Esterification method by reacting indomethacin with ethanol within different conditions of time, molar ratios and solvents in acidic medium using homogeneous acid catalysts such as sulfuric acid and methane sulfuric acid and heterogeneous acid catalysts such as amberlyst- 15. Then indomethacin acid hydrazide was synthesized by condensing the previous ester with hydrazine hydrate and the best conditions were studied of time, molar ratios, solvents and different temperatures without using any catalyst.