Sulfur trioxide-pyridine → HCID 86659600, compound

Participants

Reaction Steps

To a solution of the product of Step 2 (50 mg, 0.13 mmol) in dry pyridine (1 mL) was added pyridine sulfur trioxide (104 mg, 0.652 mmol) at room temperature under nitrogen. The reaction mixture was stirred overnight then filtered (collected solid was washed well with dichloromethane). The filtrate was concentrated under vacuum to afford the title compound which was used without purification in the next step.

Provenance & Evidence