Adding a certain compound to certain chemical reactions, such as: 615-55-4, name is 3,4-Dibromoaniline, belongs to bromides-buliding-blocks 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 615-55-4, Quality Control of 3,4-Dibromoaniline
Preparation of 6,7-Dibromo-1,4-dihydro-2,3-quinoxalinedione (Method D) 3,4-Dibromo-(trifluoroacetamido)benzene. To 30 mL of trifluoroacetic anhydride (Aldrich used as received) was added 10.0 g (39.8 mmol) of 3,4-dibromoaniline (Lancaster, used as received) in portions at 0 C. with stirring. The resultant mixture was stirred at room temperature for 2.5 h, then poured into ice-H2 O (about 300 mL) with stirring. The solid was collected by vacuum filtration, washed with H2 O (5*20 mL), and dried at 40 C. under 1 mmHg for 16 h to give 13.0 g (94%) of 3,4-dibromo-(trifluoroacetamido)benzene as an off-white powder, which was used for the next reaction without further purification. 1 H NMR (DMSO-d6): 11.474 (s, 1H), 8.098 (s, 1H), 7.935 (d, 1H, J=8.7 Hz), 7.607 (d, 1H, J=8.7 Hz).
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Reference:
Patent; The State of Oregon, acting by and through The Oregon State Board of Higher Education, acting for and on behalf of The Oregon Health Sciences University; The University of Oregon; The Regents of the University of California; US5514680; (1996); A;,
Bromide – Wikipedia,
bromide – Wiktionary