Electric Literature of 37466-90-3, These common heterocyclic compound, 37466-90-3, name is Ethyl 3,4-diaminobenzoate, 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.
General procedure: To a mixture of 2-pyridine aldehyde (5a, 107 mg, 1mmol) and 1,2-diaminobenzene (6a, 108 mg, 1 mmol) in ethanol (25 mL)was added an aqueous solution of sodium pyrosulfite (1.52g, 8 mmol, 5 mL) and refluxed for 4 to 6 h, until the TLC indicated that reaction was completed. The reaction mixture was concentrated under vacuum and the residue was dissolved in CHCl3 (2 x15 mL) and washed with water. The combined organic phases were dried over anhydrousNa2SO4, filtered and the solvent was removed under vacuumand purified by column chromatography (70% EtOAc-hexane) to afford compound 7a as a brown solid.
The synthetic route of 37466-90-3 has been constantly updated, and we look forward to future research findings.
Reference:
Article; Kamal, Ahmed; Pogula, Praveen Kumar; Khan, Mohammed Naseer Ahmed; Seshadri, Bobburi Naga; Sreekanth, Kokkonda; Medicinal Chemistry; vol. 9; 5; (2013); p. 651 – 659;,
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