Method B.-A solution of 2, 4-diamino-6-p-fluorostyryltriazine (XVIIIb)(0.23 g., 1.0 mmole) in 25 ml. of 2-methoxyethanol was stirred with 0.10 g. of 5y0 palladiumon-carbon under hydrogen at 1 atm. for 35 min.; uptake ceased after 20 min. The catalyst was removed by filtration through a pad of Celite and the filtrate was concentrated in vacuo to 8 ml. Dilution with water formed a white precipitate, which was collected on a filter, washed with water ( ...
