Water → t-Butyl 4-(isopentylamino)methyl-3-nitrobenzoate
Reaction equation
Br[CH2:2][C:3]1[CH:15]=[CH:14][C:6]([C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8])=[CH:5][C:4]=1[N+:16]([O-:18])=[O:17].O>CN(C=O)C>[CH2:4]([NH:16][CH2:2][C:3]1[CH:15]=[CH:14][C:6]([C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8])=[CH:5][C:4]=1[N+:16]([O-:18])=[O:17])[CH2:5][CH:6]([CH3:14])[CH3:7]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
Anhydrous isopentylamine was bubbled into anhydrous DMF (200 mL) at 0° C. for 15 min. A solution of t-butyl 4-bromomethyl-3-nitrobenzoate (5.0 g, 15.8 mmol) (Int. J. Peptide. Res., 36, 31 (1990)) in DMF (10 mL) was added dropwise to the cold amine solution. The solution was stirred at 0° for 30 min and poured into water. The mixture was extracted with ethyl acetate and the combined organic layers were washed with water, dried (sodium sulfate) and concentrated to give a yellow-brown oil. The oil was purified by chromatography over silica gel to yield t-butyl 4-(isopentylamino)methyl-3-nitrobenzoate.