“…1 The “three-parameter difference” parameter has been proposed and defined by our research group based on Gibbs free energy, atom utilization and inherent safety index as the theoretical basis for evaluating the thermodynamic feasibility, greenness and safety of chemical reactions. 2 However, there is a little introduction on the use of this parameter. In this study, the synthesis pathways of dimethyl carbonate and toluene diisocyanate, covering various of phase states and types of reaction routes, were comprehensively analyzed by using this parameter, and hence the optimal reaction route was designed.…”