| abstract |
The present invention relates to a novel process for the preparation of compounds of the formula (I) by reacting in a first step amino alcohols of the formula (II)with oleum to give sulphuric acid esters of the general formula (III) and by reacting these sulphuric acid esters in a second step with mercaptans or salts thereof of the general formula (IV) (IV)in each formula, where applicable, R1, R2, R3, R4, R5, R6, R, n and M have the meanings given in the description,in the presence of a diluent and in the presence of a base. |