Reaction #321643

Reaction equation

benzo[b]thiophene-2-boronic acid

N-(5-bromothiophene-2-sulfonyl)pyrrole

→

N-[5-(benzo[b]thien-2-yl)thiophene-2-sulfonyl]pyrrole

Yield 68.0%

Conditions

Workup

1. 1
   OtherPurification by column chromatography

Procedure

N-[5-(benzo[b]thien-2-yl)thiophene-2-sulfonyl]pyrrole was prepared in the same manner as described in Example 32C from benzo[b]thiophene-2-boronic acid (426 mg, 2.39 mmol) and N-(5-bromothiophene-2-sulfonyl)pyrrole (700 mg, 2.39 mmol). Purification by column chromatography using 2% ethyl acetate/hexanes gave the pure sulfonamide in 68% yield as a brownish-red solid.

Source