The chemical industry reduces the impact on the environment during synthesis 4-Iodobenzoic acid. I believe this compound will play a more active role in future production and life.
Synthetic Route of 619-58-9, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 619-58-9, name is 4-Iodobenzoic acid, This compound has unique chemical properties. The synthetic route is as follows.
General procedure: IS-PPh3 (746 mg, 1.8 mmol) was dried by a vacuum pump for 2 h at 70 C. To a flask containing IS-PPh3 were added 4-methoxycarboxylic acid (152 mg, 1.0 mmol), BrCCl3 (357 mg, 1.8 mmol), benzylamine (129 mg, 1.2 mmol), triethylamine (0.14 mL, 1.0 mmol), and THF (4 mL). The obtained mixture was stirred for 6 h at 60 C under Ar atmosphere. After the reaction, diethyl ether (10 mL) and aq HCl (1 M, 2 mL) were added at 0 C and the obtained mixture was stirred for 15-30 min at room temperature. Then, the reaction mixture was poured into water (8 mL) and the obtained mixture was extracted with diethyl ether (10 mL¡Á4). The combined organic layer was washed with water (10 mL) and brine (10 mL), and then dried over Na2SO4. After removal of the solvent under reduced pressure, N-benzyl-4-methoxybenzamide was obtained in 93% yield with 99% purity, as estimated by 1H NMR measurement. For cinnamic and aliphatic amides (entries 18-25 in Table 2) and indole-2-carboxamide (entry 16 in Table 2), the reaction mixture was poured into water (8 mL) and the obtained mixture was extracted with chloroform (10 mL¡Á4). The combined organic layer was washed with water (10 mL) and brine (10 mL), and then dried over Na2SO4. After removal of the solvent under reduced pressure, N-benzylamide was obtained. or the recovery of IS-Ph3PO, NaCl (5.0 g) was added to the aqueous layer. The aqueous solution was extracted with CHCl3 (10 mL¡Á5) and the combined organic layer was dried over NaSO4. After removal of the solvent, IS-Ph3PO containing a trace amount of IS-Ph3P was obtained in 95% yield.
The chemical industry reduces the impact on the environment during synthesis 4-Iodobenzoic acid. I believe this compound will play a more active role in future production and life.
Reference:
Article; Kawagoe, Yuhsuke; Moriyama, Katsuhiko; Togo, Hideo; Tetrahedron; vol. 69; 19; (2013); p. 3971 – 3977;,
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