“…The ACS Green Chemistry Institute-Pharmaceutical Roundtable (ACS GCI-PR) has made available a more general list, developed collaboratively by the members of different pharmaceutical companies, 2 and a comparison between individual solvent guides has been published by the Chem21 consortium. 8,9 Water is always at the top in the lists of green solvents, and much work has been carried out on transition metal-catalysed reactions in this solvent. [10][11][12][13][14] However, the physical properties of water do not always make it practically the best solvent for an industrial process, 6 and the low solubility of many organic compounds in water represents an obvious issue.…”