Abstract:
In the present time, coumarin derivatives are widely studied due to variois excellent properties for agriculture, medical, pharmaceutical, electronics and cosmetic. 7-hydroxy-4-chloromethylcoumarin is one of derivative that can cause a substitution reaction. It is ideal for introducing the coumarin derivative to produce various types of derivatives. 7-hydroxy-4-chloromethylcoumarin is formed by the chemical reaction between resorcinol and ethyl-4-chloroacetoacetate with sulfuric acid as a solvent catalyst. However, the coumarin is still synthesized in the laboratory. It has low quantity of coumarin for industrial production and there is no study the optimal condition of 7-hydroxy-4-chloromethylcoumarin. In this work, the optimal condition factors of 7-hydroxy-4-chloromethylcoumarin which affect yield percentage and purity of product to apply for 2 and 10 litters standard tank reactor were studied in the laboratory scale such as solvent catalyst, reaction temperature, reaction time, order in addition of reactant, mole ratio of resorcinol to ethyl-4-chloroacetoacetate and concentration of sulfuric acid. The product purity was determined by using nuclear magnetic resonance. The optimal reaction was found at 0oc 2 hours, mole ratio of resorcinol to ethyl-4-chloroacetoacetate is 1.2:1 dissolved in 98%H2SO4 and adding all three reactants in the meantime given highest yield of 72%.The optimum impeller speed in 2 L was 600 rpm. The constant Solid suspension was successfully used as scale up factor in 10 L reactor.