Synthetic Route of 54435-09-5, A common heterocyclic compound, 54435-09-5, name is 2-Iodo-4-methoxybenzoic acid, molecular formula is C8H7IO3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
(c) A mixture of 2-iodo-4-methoxybenzoic acid (13.6 g, 48.9 mmol), 5-amino-1-ethylpyrazole (5.5 g, 49 mmol), DMF (100 ml), K2 CO3 (6.9 g, 0.05 mol) and Cu(OAc)2 (0.5 g) was refluxed overnight. The reaction mixture was poured into water (500 ml) and acidified with acetic acid to a pH of 5-6. The product slowly crystallized from the solution and was collected by filtration and washed with water. The solid was taken up in CH2 Cl2 /methanol, dried, filtered and evaporated. The residue was combined with POCl3 (60 ml) and refluxed overnight. The reaction mixture was cooled, poured into water and neutralized with concentrated NH4 OH. The mixture was extracted with CH2 Cl2, and the CH2 Cl2 extracts were evaporated and the residue was purified by column chromatography on silica gel eluding with ethyl acetate to afford 5 g of 1-ethyl-4-chloro-7-methoxy-1H-pyrazolo[3,4-b]quinoline, m.p. 114-115 C.
The synthetic route of 54435-09-5 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Sanofi Winthrop Inc.; US5488055; (1996); A;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com