Ammonia → HCID 178508663, compound

Participants

Reaction Steps

Under nitrogen, 44.1 g (0.17 mol) of 6-bromo-2,3-dicyanonaphthalene was added to a solution of sodium methoxide in methanol prepared by adding 1.92 g (84 mmols) of metallic sodium in 5 times to 270 ml of absolute methanol, and anhydrous ammonia gas was slowly bubbled into the resulting mixture with sufficient mixing at room temperature for about 1 hour. The mixture was refluxed for about 3 hours, while bubbling therethrough anhydrous ammonia gas. After cooling, the yellow solid precipitated was collected by filtration, sufficiently washed with methanol and dried under reduced pressure to obtain 45 g of 6-bromo-1,3-diiminobenz[f]isoindoline as a yellow solid. IR spectrum of this 6-bromo-1,3-diiminobenz[f]isoindoline is shown in FIG. 4. The 6-bromo-1,3-diiminobenz[f]isoindoline was used in the subsequent reaction without further purification.

Provenance & Evidence