Bromine → 3-Bromo-6-phenyl-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentalene

Participants

Reaction Conditions

Reaction Steps

6-Phenyl-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentalene (0.12 g, 0.5 mmol) was added with a solution of bromine in glacial acetic acid (0.5 mL of a 3 M solution). The reaction mixture was heated at 80° C. for 12 hr. The solution was cooled to room temperature and poured into ice water. The resultant precipitate was filtered, washed with water to provide the corresponding 3-Bromo-6-phenyl-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentalene (0.14 g, 0.44 mmol) as yellow solid in 88% yield.

Provenance & Evidence