Oxalic Acid → HCID 69802998, compound

Participants

Reaction Steps

(R)-α-(2-Chloroethyl)benzenemethanol (341 mg, 2 mmol) was dissolved in tetrahydrofuran (10 ml) and treated with sodium hydride as a 60% suspension in mineral oil (480 mg, 3 mmol) followed after 10 minutes by 4-chloro-2,5-difluorobenzonitrile (347 mg, 2 mmol). The mixture was stirred at room temperature for 18 h before being treated with methanol (1 ml) and then water (10 ml). The tetrahydrofuran was then removed via heating the vessel to 80° C. and applying a nitrogen stream. Once the tetrahydrofuran was evaporated the residue was extracted into dichloromethane, dried over magnesium sulphate and concentrated in vacuo. The resultant material was re-dissolved into dimethylformamide (8 ml) and treated with sodium iodide (305 mg, 2.03 mmol), triethylamine (565 μl, 4.06 mmol) and cyclopropylamine (114 mg, 2 mmol) before being heated to 60° C. for 5 days. The mixture was filtered and purified via RPHPLC on the crude reaction material. The purified compound was then treated with 50% saturated oxalic acid in ether to produce 74 mg of a white powder that was collected via filtration.

Provenance & Evidence