Oxalyl chloride → HCID 57864392, compound

Participants

Reaction Steps

5.9 mg (0.05 mmol) of oxalyl chloride are slowly added dropwise to a solution of 12.7 mg (0.02 mmol) of 4-[(4E)-5-{2-[(4-tert-butylbenzyl)oxy]phenyl}-3-(4-cyanobenzyl)pent-4-en-1-yl]-benzoic acid from Example 100A in 0.2 ml of dry THF with 1 drop of DMF while cooling in ice. The reaction mixture is stirred at RT for 30 minutes and then concentrated in vacuo, and the residue is coevaporated twice with dichloromethane and then taken up in 0.2 ml of THF. This solution is added dropwise to a solution of 4.2 mg (0.05 mmol) of thiosemicarbazide in 0.25 ml of THF at 0° C. The mixture is stirred at RT for 1 hour and then concentrated, and the residue is reacted without further purification in the next stage.

Provenance & Evidence