<p>Modern metallurgy aims to improve metal extraction from primary and secondary sources to meet rising demand and sustainability goals. Among hydrometallurgical methods, leaching has proven to be an effective technique for processing complex ores and concentrates that are difficult to treat by conventional methods. However, chalcopyrite, the most abundant copper-bearing mineral, remains difficult to leach effectively, often yielding low recoveries under mild conditions. These challenges highlight the need for improved approaches, such as the use of polar organic solvents, to enhance metal extraction from this key mineral. This study investigated the use of methanol and 2-propanol as polar organic solvents to enhance the leaching of chalcopyrite with hydrogen peroxide in hydrochloric acid. Previous research in the HCl–H₂O₂ system showed that copper extraction reached only 26% after two hours, primarily due to the rapid catalytic decomposition of hydrogen peroxide. To address this limitation, the effects of methanol and 2-propanol on chalcopyrite oxidation were examined under controlled conditions, with constant solid-to-liquid ratio, stirring speed, temperature, and reagent concentrations. The results demonstrated that the addition of alcohols increased metal extraction by more than 30% compared to the system without alcohols. Specifically, approximately 59% of copper and 52.5% of iron were extracted with methanol after two hours, while 2-propanol resulted in about 64% copper and 50% iron extraction. To characterize the phases produced during the leaching process, X-ray diffraction (XRD), Scanning electron microscopy with energy-dispersive X-ray spectrometry (SEM–EDS), and Fourier transform infrared spectroscopy (FTIR) were employed.</p>