Sodium Carbonate → ethyl 5-phenyl-3,6-dihydro-2H-pyran-4-carboxylate

Reaction equation

FC(F)(F)S(O[C:7]1[CH2:12][O:11][CH2:10][CH2:9][C:8]=1[C:13]([O:15][CH2:16][CH3:17])=[O:14])(=O)=O.[C:20]1(B(O)O)[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1.C([O-])([O-])=O.[Na+].[Na+]>O1CCOCC1.O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[C:20]1([C:7]2[CH2:12][O:11][CH2:10][CH2:9][C:8]=2[C:13]([O:15][CH2:16][CH3:17])=[O:14])[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1