2,3-Dichloro-5,6-dicyano-1,4-benzoquinone → 6-Bromo-1,10-dihydropyrrolo[2,3-a]carbazole

Participants

Reaction Steps

3-bromophenylhydrazine hydrochloride (1.00 g; 4.47 mmol), sodium acetate (367 mg; 4.47 mmol); stage B: DDQ (454 mg; 2.00 mmol); stage C: chromatography on silica gel (9/1 and then 8/2 cyclohexane/EtOAc) allows isolation of the compound of Example 25 (513 mg; 1.80 mmol; yield=45%) and the compound of Example 26 (342 mg; 1.20 mmol; yield=30%) in the form of gray solids.

Provenance & Evidence