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.