A Rapid and Eco-friendly Synthesis of 5(6)-Carboxy-Rhodamine 110 Isomers

Document Type: Research Note


1 College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, Shaanxi, 710065, CHINA

2 College of Environment and Chemical Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, CHINA


5(6)-Carboxy-rhodamine 110 isomers were rapidly synthesized by condensation of 3-aminophenol and trimellitic anhydride using microwave irradiation as heating method. After esterification of the two isomers, separation and hydrolyzation provided target products,5-carboxy-rhodamine 110 and 6-carboxy-rhodamine 110, in high yields. The results shows microwave irradiation can effectively reduce the reaction time and the demanding of condensed H2SO4.


Main Subjects

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