Choosing the right solvent is crucial for the following reasons: - Reaction Rate: The solvent can significantly impact the speed of the reaction. - Selectivity: The right solvent can lead to higher selectivity towards the desired product. - Catalyst Longevity: A suitable solvent can prevent deactivation of the catalyst. - Safety and Environmental Impact: Some solvents are toxic or environmentally harmful. Green solvents, such as water and supercritical CO2, are increasingly preferred.