Adding a certain compound to certain chemical reactions, such as: 28890-99-5, name is 5H-Benzo[d]benzo[4,5]imidazo[1,2-a]imidazole, belongs to imidazoles-derivatives compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 28890-99-5, Application In Synthesis of 5H-Benzo[d]benzo[4,5]imidazo[1,2-a]imidazole
Example 6 a) 20.0 g (78.8 mmol) 1,3-dibromo-5-fluoro-benzene, 16.3 g (78.8 mmol) 6H-benzimidazolo[1,2-a]benzimidazole and 43.5 g (0.315 mmol) potassium carbonate in 200 ml DMF are stirred for 17 h at 170 C. The reaction mixture is filtered hot and the precipitate from the mother liquor is filtered after cooling. The product is washed with water and ethanol and decocted with diethyl ether and ethanol. Yield 21.2 g (61%).1H NMR (400 MHz, THF-d8): delta 8.21-8.26 (m, 4H), 7.98-7.8.00 (m, 1H), 7.68-7.73 (m, 2H), 7.31-7.49 (m, 4H).
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Reference:
Patent; BASF SE; US2012/241681; (2012); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem