... DOI: 10.1039/C3RA45600E (Communication) RSC Adv., 2014, 4 ... or i-PrOH as solvent (entries 6–7). Moreover, better result was obtained in n-hexane than in i-PrOH when the reaction time was reduced to 4 h (Entries 8 and 9). Therefore, n-hexane was used for the next ...