CO[N:3]=[C:4]1[C:12]2[C:7](=[CH:8][C:9]([Cl:14])=[CH:10][C:11]=2[Cl:13])[CH2:6][CH2:5]1.[OH-].[Na+]>C1COCC1>[Cl:14][C:9]1[CH:8]=[C:7]2[C:12](=[C:11]([Cl:13])[CH:10]=1)[CH:4]([NH2:3])[CH2:5][CH2:6]2A soln. of BH3 (0.6 mL, 1M in THF) was added to a soln. of 5,7-dichloro-2,3-dihydro-1H-inden-1-one O-methyl oxime (0.31 mmol) in 1 mL THF. The reaction mixture was heated to 60° C. for 3 days. An aq. 1M NaOH soln was added and heating to 60° C. was continued for another 24 h. The solvent was removed under vacuo, the residue was diluted with a sat. aq. NaHCO3 soln. and extracted 3 times with EtOAc. The comb. org. layers were dried over MgSO4 and conc. in vacuo to give the desired product as colorless oil.
Wird geladen…