Analyzing the synthesis route of 57709-61-2

As the paragraph descriping shows that 57709-61-2 is playing an increasingly important role.

57709-61-2, 1,10-Phenanthroline-2,9-dicarboxylic acid is a catalyst-ligand compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Under anhydrous conditions, 4-dimethylaminopyridine (DMAP,340 mg, 2.8 mmol, 2.5 equiv), N-(3-dimethylaminopropyl)-N?-ethylcarbodiimide hydrochloride (EDC¡¤HCl, 640 mg, 3.4 mmol,3.0 equiv), and 3-aminoquinoline (450 mg, 3.1 mmol, 2.8 equiv)were added as solids to a suspension of compound 3 (3.0¡¤102mg, 1.1 mmol, 1.0 equiv) in DMF (23 mL). The solution wasplaced under argon and stirred at room temperature (48 h). Theresulting yellow suspension was filtered under vacuum, and theisolated precipitate washed with saturated aqueous sodiumbicarbonate (30 mL), CH2Cl2 (20 mL), and diethyl ether (20 mL)to afford pure compound 4 as a pale yellow solid (490 mg, 85percent).1H NMR (300 MHz, DMSO-d6): delta = 7.68 (t, 3J = 7 Hz, 2 H), 7.75 (t,3J = 7 Hz, 2 H), 8.09?8.13 (m, 4 H), 8.33 (s, 2 H), 8.69 (d, 3J = 8 Hz,2 H), 8.91 (d, 3J = 8 Hz, 2 H), 9.17 (d, 4J = 2 Hz, 2 H), 9.68 (d, 4J = 2Hz, 2 H), 11.88 (s, 2 H); mp >280 ¡ãC (lit. >260 ¡ãC).7, 57709-61-2

As the paragraph descriping shows that 57709-61-2 is playing an increasingly important role.

Reference£º
Article; Miron, Caitlin E.; Petitjean, Anne; Synlett; vol. 29; 10; (2018); p. 1362 – 1366;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI