Benzoyl chloride, 3-nitro- → N-[3-({2-({6-[(5R)-5-(2,2-Dimethyl-4H-1,3-benzodioxin-6-yl)-2-oxo-1,3-oxazolidin-3-yl]hexyl}oxy)ethoxy}methyl)phenyl]-3-nitrobenzamide

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Reaction Steps

A solution of (5R)-3-{6-[2-{[(3-aminophenyl)methyl]oxy}ethoxy]hexyl}-5-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-1,3-oxazolidin-2-one (2.20 g) in pyridine (20 ml) under nitrogen was treated with 3-nitrobenzoyl chloride (819 mg) and the mixture was stirred at 20° for 2.5 h. Sat. sodium bicarbonate solution (100 ml) was added and the mixture was extracted with dichloromethane (2×50 ml). The combined extracts were dried (Na2SO4) and the solvent evaporated in vacuo. The residue was purified by flash chromatography on silica gel. Elution with EtOAc-PE (2:1) gave the title compound (2.11 g). LCMS RT=3.71 min, ES+ve 648 (MH)+.

Provenance & Evidence