Synthesis of Tetrahydro-thiazolidine from P-methylbenzaldehyde
Abstract: In recent decades, researching on thiazolidinediones have achieved a lot of progress, it has Biological activity these compounds become extremely important to build a skeleton in drug research. So development of an efficient method to synthesize imidazolines is a very important issue in the synthetic organic field,in this work paper.
Tetrahydro-thiazolidine was synthesized using P-methylbenzaldehyde and cysteamine hydrochloride as starting materials by the base-catalyzed condensation reaction. there are various operation conditions affecting the reaction yield, such as solvents, base temperature, reaction time and other factors. The mild reaction conditions were P-methylbenzaldehyde and cysteamine hydrochloride as starting materials in a molar ratio of 1:2. The solvent of ethanol, the reaction temperature of room temperature, the reaction base of potassium acetate, The optimum yield could reach 72% at optimum mentioned reaction conditions. Meaning while, We also explored the condensation reaction of P-methyl benzaldehyde with cysteine ethyl ester hydrochloride, respectively, and cysteine methyl ester hydrochloride under this condition.
Key Words: Cysteamine hydrochloride; P-tolualdehyde; Biological activity; Tetrahydro-thiazolidine
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