Br[CH2:2][CH2:3][CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([CH3:12])=[C:8]([N+:13]([O-:15])=[O:14])[CH:7]=1.C([O-])([O-])=O.[K+].[K+].[NH:22]1[CH2:27][CH2:26][O:25][CH2:24][CH2:23]1>O1CCOCC1.O>[CH3:12][C:9]1[CH:10]=[CH:11][C:6]([O:5][CH2:4][CH2:3][CH2:2][N:22]2[CH2:27][CH2:26][O:25][CH2:24][CH2:23]2)=[CH:7][C:8]=1[N+:13]([O-:15])=[O:14]A solution of the 4-(3-bromo-propoxy)-1-methyl-2-nitro-benzene V-h (500 mg, 1.82 mmol) in dry dioxane (30 mL) was treated with K2CO3 (1.01 g, 7.28 mmol) and morpholine (319 μl, 3.65 mmol) and heated to 100° C. for 6 h. The cooled mixture was diluted with water and extracted with DCM. The combined organics were dried (MgSO4), filtered and evaporated before purification by column chromatography (SiO2; eluting with 2% EtOH in DCM) to afford the desired product as a yellow-orange oil V-i (356 mg, 70%). 1H NMR (300 MHz, CDCl3) δ 7.51 (d, J=2.7 Hz, 1H), 7.21 (d, J=8.5 Hz, 1H), 7.05 (dd, J=8.5, 2.7 Hz, 1H), 4.06 (t, J=6.3 Hz, 2H), 3.79-3.66 (m, 4H), 2.49 (dt, J=9.0, 5.1 Hz, 9H), 2.07-1.88 (m, 2H).
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