This invention relates to a hydraulic, multi-way distributor comprising a body with a water inlet passage and several water outlet ways towards just as many uses. In particular, the method is useful for the preparation of 2-methoxy-5,6-difluorobenzaldehyde, an important intermediate for the preparation of 4-amino-2-pyrimidin-5-ylmethanone, a potent and selective inhibitor of CDK4Cyclin D1, CDK2Cyclin E and CDK1Cyclin B. A determiner determines the configuration of the radio bearer by which the data is to be communicated. This affords simple and user-friendly means for carrying out the programming of the functions making it possible to ensure the fluidity of these multimodal dialogs.