[N:1]1[CH:6]=[CH:5][CH:4]=[CH:3][C:2]=1[C:7]1[S:8][CH:9]=[C:10]([CH2:12][OH:13])[N:11]=1>C1(C)C=CC=CC=1.[O-2].[Mn+2]>[N:1]1[CH:6]=[CH:5][CH:4]=[CH:3][C:2]=1[C:7]1[S:8][CH:9]=[C:10]([CH:12]=[O:13])[N:11]=15.8 g of the product of Stage D in 60 ml of toluene were refluxed for 2 hours in the presence of 13 g of manganese oxide and filtration was carried out. The solvent was evaporated under reduced pressure to obtain 5 g of the expected product melting at 131° C.
Wird geladen…