1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 89705466, compound

Participants

Reaction Steps

To a solution of 4-fluoro-5-((2-fluoro-4-iodophenyl)amino)benzo[d][1,2,3]thiadiazole-6-carboxylic acid (210 mg, 0.48 mmol) in CH2Cl2 (10 mL) was added HOBt (105 mg, 0.72 mmol) followed by EDCI (138 mg, 0.72 mmol). The mixture was stirred for 1 h and O-((2,2-dimethyl-1,3-dioxolan-4-yl)methyl)hydroxylamine (108 mg, 0.74 mmol) was added. After stirring for 4 h at ambient temperature, the reaction was treated with saturated NH4Cl (aq.). The resultant mixture was extracted with CH2Cl2 (15 mL×3). The combined organic extracts was washed by water (10 mL) and brine (10 mL) sequentially, dried over Na2SO4, filtered and concentrated in vacuo. The crude product (229 mg) was used directly in the next step without further purification.

Provenance & Evidence