摘要:
The present invention relates to a process for the preparation of 4′-bromomethyl-biphenyl derivatives of the formula: by reacting a 4′-methyl-biphenyl derivative of the formula: with a brominating agent a in a hydrobromic acid/alkali metal bromate system in a two-phase medium, and under photo-iradiation, where R is as defined in the specification.
摘要:
The invention relates to 2-butyl-3-(4-[3-(dibutylamino)propoxy]benzoyl-5-nitrobenzofuran hydrochloride, to its preparation and to its use as synthetic intermediate, in particular in preparing 2-butyl-3-(4-[3-(dibutylamino)propoxy]benzoyl)-5-nitrobenzofuran, itself an intermediate for dronedarone.
摘要:
The invention relates to a process for preparing 2-thienyl-2-ethanol, in which: a) thiophene is metallated using an alkali metal, in the presence of an electron transfer agent, b) the compound obtained is treated with ethylene oxide, c) the thienyl derivative thus formed is hydrolyzed, to give the desired compound. 2-Thienyl-2-ethanol is a synthetic intermediate.