Nitric Acid → HCID 18630145, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of the amide of example 49 (1.10 g, 5 mmol) in CH2 Cl2 (50 mL) at 0° C. was added dropwise over 2 min, a cold mixture of 70% nitric acid (0.95 mL, 15 mmol) and concentrated sulfuric acid (5 mL) dropwise. The mixture was stirred at 0° C. for 10 min and was poured onto ice. The mixture was extracted with ethyl acetate, the combined organic layers washed with brine, sat NaHCO3, brine, dried (MgSo4) and concentrated to a solid (2.68 g, 101%) consisting of a 2:1 ratio of 5-nitro and 3-nitro isomers. The title compound was obtained by RC (ethyl acetate/hexanes) in 60% yield as a white solid. m.p. 100°-102° C.

Provenance & Evidence