Fig. 2. (A) Investigation of the reaction temperature ([HEMTH]H2PMo12O40 as catalyst, DMC as solvent, 10 min, Table S4†); (B) optimization of the reaction time (70 °C, Table S5†); (C) examination of the loading of [HEMTH]H2[PMo12O40] (DMC as solvent, 70 °C, 20 min, Table S6†) (yields were determined by GC using biphenyl as an internal standard).
