Table 2.

Initial and final water concentrations for (S)-mandelonitrile (3) synthesis in MTBE in the presence and absence of Na₂HPO₄⋅2 H₂O/Na₂HPO₄⋅7 H₂O.

	Salt kept during the reaction	Salt removed (standard conditions)	Control experiments
			1	2
initial water concentration [ppm]	3500[a]	3200[a]	4200[c]	3100[d]
final water concentration [ppm]	32 000[b]	9600[b]	5500[c]	10 100[d]

^[a]Measured after stirring the CLEA in the solvent for 1 h in the presence of the salt pair “2–7”.

^[b]Measured for the reaction mixture after 24 h.

^[c]The CLEA was stirred in the solvent in the presence of the salt pair “2-7” but without reagents for 24 h. The water concentration was measured after 1 h and after 24 h.

^[d]The reagents were stirred in the solvent in the presence of the salt pair “2-7” but without the CLEA. The water concentration was measured after 1 h and after 24 h.