Sulfamic Acid → HCID 86607794, compound

Participants

Reaction Steps

To a stirring solution of 2-ethoxy-5-formyl-benzoic acid ethyl ester (1.0 g, 4.5 mmol) in 10 mL of dimethylformamide was added dropwise sulfamic acid (610.4 mg, 6.3 mmol) in 5 mL of water. After addition of sulfamic acid, sodium chlorite (737.2 mg, 8.2 mmol) in 5 mL of water was added dropwise. Reaction was allowed to stir for 2 h at room temperature. Reaction was diluted with brine and extracted with ethyl acetate. Organic extract was dried with anhydrous magnesium sulfate, filtered and concentrated in vacuo to give 4-ethoxy isopthalic acid 3-ethyl ester as a white solid (900 mg, 84%). LC-MS: 239.2 [(M+H)+].

Provenance & Evidence