Dichloromethane → HCID 21925587, compound

Participants

Reaction Steps

The hydrazide of Preparation 3 (50.0 g, 169 mmol) was suspended in acetonitrile (250 ml) and cooled using an ice bath. Trifluoromethanesulfonic anhydride (29.9 ml, 177 mmol) was added dropwise at T<15° C. The reaction was warmed to room temperature and stirred for 16 hours. The reaction was cooled using an ice bath and a solution of sodium hydrogen carbonate (29.8 g, 354 mmol) in water (250 ml) was added dropwise. Dichloromethane (250 ml) was added and the phases were separated. The organic containing product phase was used in preparation 14b.

Provenance & Evidence