2,4-Dichlorobenzoic Acid → HCID 44479141, compound

Participants

Reaction Steps

1-Nitrosocyclohexyl 2,4-dichlorobenzoate was prepared according to General Method 3. A solution of cyclohexanone oxime (2.66 g, 23.5 mmol) in DCM (50 ml) was added dropwise to a solution of lead tetra acetate (10.42 g, 23.5 mmol) and 2,4 dichlorobenzoic acid (45.0 g, 235 mmol) in DCM (300 ml) at 0° C. A blue color gradually appears on addition of the oxime solution. Upon complete addition (1 hour) the reaction was allowed to warm to ambient temperature and stirring was continued for a further 2-3 hours. The reaction was quenched by the addition of water, the phases separated and the organics dried over Na2SO4 and concentrated in vacuo to afford 1-nitrosocyclohexyl 2,4-dichlorobenzoate which was purified by column chromatography on silica gel with hexane:EtOAc as the eluent to afford the title compound as a blue oil in 9% yield. δH (400 MHz, DMSO-d6) δ 8.02 (1H, d, 8.4 Hz), 7.85 (1H, d, 2.0 Hz), 7.64 (1H, dd, 8.4, 2.0 Hz), 2.03-2.12 (2H, m), 1.38-1.93 (8H, m).

Provenance & Evidence