[CH:1]12[CH2:7][CH:4]([CH:5]=[CH:6]1)[CH:3]([C:8]([O-:10])=[O:9])[CH:2]2[C:11]([O-:13])=[O:12].[Na+:14].[Na+]>O.[Pd]>[CH:1]12[CH2:7][CH:4]([CH2:5][CH2:6]1)[CH:3]([C:8]([O-:10])=[O:9])[CH:2]2[C:11]([O-:13])=[O:12].[Na+:14].[Na+:14]To a solution of disodium bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylate (10.0 g, from example 3) in water (100 g) was added 0.5 g palladium on activated carbon (5 wt %). The mixture was transferred into a Parr reactor and was subjected to hydrogenation (50 psi, room temperature) for 8 hours. The activated carbon was filtered out, and the water was removed in vacuo at 75° C. The resulting product was dried and milled (m.p >300° C.). NMR and IR analyses were consistent with that of the expected structure.
読み込み中…