[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[C:4]([N+:11]([O-])=O)[CH:3]=1.N[C:15]([CH3:19])([CH3:18])[CH2:16][OH:17]>CCO>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[C:4]([NH:11][C:15]([CH3:19])([CH3:18])[CH2:16][OH:17])[CH:3]=1A mixture of 20 g of 4-chloro-1,2-dinitrobenzene and 36 g of 2-amino-2-methylpropan-1-ol in 100 ml of EtOH is refluxed for 36 hours. The reaction mixture is evaporated under vacuum, the residue is extracted with AcOEt, washed with a 1N solution of HCl and with water and dried over Na2SO4 and the solvent is evaporated off under vacuum. The residue is chromatographed on silica using DCM as the eluent to give 16 g of the expected product, which is used as such in the next step.
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