82998-57-0, name is 3-Iodo-4-methylbenzoic acid, belongs to iodides-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Formula: C8H7IO2
Reference Example 8 4-Methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaboran-2-yl) benzoic acid (Compound A8) 3-Iodo-4-methyl benzoic acid (26.2 g, 100 mmol) was dissolved in DMF (300 mL), and then bis(pinacolate)diboron (38.1 g, 150 mmol), [1,1′-bis(diphenylphosphino)ferrocene)dichloropalladium (8.17 g, 10.0 mmol) and potassium acetate (49.0 g, 500 mmol) were added thereto, followed by stirring under argon atmosphere at 100C for 6 hours. To the reaction mixture was added 1 mol/L of hydrochloric acid, followed by extraction with ethyl acetate, an organic layer was washed with brine, followed by drying over anhydrous magnesium sulfate, and activated carbon (1 g) was added thereto, followed by stirring at room temperature for 1 hour. The reaction mixture was filtered through celite, followed by washing with ethyl acetate: The solvent was evaporated, and the resulting crystals were recrystallized from isopropyl ether, followed by filtration to obtain Compound A8 (18.5 g, 71%). 1H NMR (300 MHz, CDCl3) delta (ppm) 1.36 (s, 12H), 2.61 (s, 3H), 7.26 (d, J = 8.1 Hz, 1H), 8.02 (dd, J = 8.1, 1.8 Hz, 1H), 8.49 (d, J = 1.8 Hz, 1H).
The synthetic route of 82998-57-0 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Kyowa Hakko Kirin Co., Ltd.; EP2269993; (2011); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com