Potassium Bicarbonate → Anthraquinone

Participants

Reaction Steps

To tetrahydrofuran (100 ml), 1-amino-2-methylsulfonyl-4-(3-hydroxyanilino)anthraquinone (4.08 g), potassium hydrogencarbonate (2.0 g) and 2,4-difluoro-6-(N-methyl-N-phenylamino)triazine (2.35 g) were added, and the mixture was subjected to condensation by heating under reflux for 1.5 hours. The reaction liquor was treated as in Example 6 to produce 5.8 g of an anthraquinone dye of the following formula in a yield of 95%. ##STR47## The dye had a λ max (acetone) of 620 nm.

Provenance & Evidence