A green and efficient protocol has been developed for the Pd(OAc)(2)-catalyzed ligand-free Suzuki Miyaura reaction of N-methyliminodiacetic acid (MIDA) boronates in water. In the presence of Pd(OAc)(2) as a catalyst and (i-Pr)(2)NH as a base, the cross-coupling reactions of aryl bromides with aryl MIDA boronates proceeded smoothly in water without any surfactant, and various functional groups were tolerated under the optimized conditions.