Improvements in the subject-matter of patent of invention No. 529,608 relating to process for obtaining new 1H- imidazole derivatives

摘要

Process for obtaining 1H-imidazole derivatives of general formula I": comprising the reaction of a compound of formula II where A is methine (-CH-) with a compound of formula III" where X is bromine or chlorine, R"' is a halogen atom selected from chlorine or fluorine in any of the 5 or 7 positions of the benzo[b]thiophene residue and joining the methylene group (-CH2-) to the benzo[b]thiophene residue in the 2 or 3 position thereof, in hexamethyl phosphorotriamide, in the presence of a mineral base, preferably sodium hydride, and at a temperature of between 0 degree C and 100 degree C for a period of time of between 1 and 24 hours, with purification by crystallization or extraction, washing, drying and chromatography, yielding addition salts by treatment with the corresponding acids.