反应详情

A solution of the crude (4-fluorosulfonyl-benzoylamino)-acetic acid tert-butyl ester (541 mg, 1.70 mmol) (from step A above) in 2 mL of methylene chloride was treated with 2 mL of trifluoroacetic acid. The reaction mixture was stirred at room temperature for 72 h. The reaction mixture was concentrated in vacuo to provide crude (4-fluorosulfonyl-benzoylamino)-acetic acid (407.9 mg, 92%) as a solid that was used without further purification.

1. concentrationThe reaction mixture was concentrated in vacuo