In this improved processes are described for the preparation of the compound of 7h pyrrolo [2,3-d] pyrimidine, N - methyl - 1 - (trans-4 - [methyl (7H pyrrolo [2,3 - d] pyrimidin-4-yl) cyclohexyl] amino} - methanesulfonamide, Intermediate and Food acceptable salts of these (formula (1)).<;p>;EN LA PRESENTE SE DESCRIBEN PROCESOS MEJORADOS PARA LA PREPARACIÓ;N DEL COMPUESTO DE 7H-PIRROLO[2,3-D]PIRIMIDINA, N-METIL-1- {TRANS-4-[METIL(7H-PIRROLO[2,3-D]PIRIMIDIN-4-IL)AMINO]CICLOHEXIL}-METANOSULFONAMIDA, INTERMEDIOS DE ESTOS Y SALES VETERINARIAMENTE ACEPTABLES DE ESTOS (FÓ;RMULA (1)).<;/p>;