2-Sulfobenzoic acid cyclic anhydride → HCID 19975838, compound

Participants

Reaction Steps

1.3 g (5.1 mmol) of the amine from Example 14, Step B and 940 mg (5.1 mmol) of 2-sulfobenzoic acid cyclic anhydride were dissolved in 20 ml dichloromethane. A solid material precipitated immediately from the clear solution, and the mixture was stirred at room temperature over night. The pale yellow crystals of the title compound were filtered by suction, heated with ethanol, filtered again after cooling to room temperature, and dried in vacuo, m.p.>320° C.

Provenance & Evidence