3,5-Dibromoquinolacetic acid [(3,5-dibromo-1-hydroxy-4-oxocyclohexa-2,5-dien-1-yl)acetic acid] (2)
This protocol is extracted from research article:
Marine biomimetics: bromotyrosines loaded chitinous skeleton as source of antibacterial agents
Appl Phys A Mater Sci Process, Jan 2, 2021; DOI: 10.1007/s00339-020-04167-0

White solid. Mp = 192–194 °C (decomp.). 1H NMR (400 MHz, DMSO-d6): δH 12.48 (br s, 1H, COOH), 7.65 (s, 2H, H-2 and H-6), 6.41 (br s, 1H, OH), 2.79 (s, 2H, H2-7); 13C NMR (125 MHz, DMSO-d6): δC 172.8 (qC, C-4), 170.3 (qC, C-8), 153.3 (2 × CH, C-2 and C-6), 119.9 (2 × qC, C-3 and C-5), 71.7 (qC, C-1), 43.8 (CH2, C-7); MS (CI): m/z = 324.7 [M − H]+.

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