A green chemical synthetic protocol has been developed for the rapid parallel synthesis of a library of biologically potential 2-amino-4-arylthiazoles, employing water as a solvent under microwave irradiation (MWI). This novel process yields the target NCE s in very short time, good yield and purity. The judicious use of water as green solvent is attractive and cost effective & makes the process eco-friendly. Besides the general discussion on the biology and synthesis of 2-aminothiazoles, a short review on MWI and use of water as a green solvent is also included. The target NCE s bear good antifungal and antibacterial potential.