Extended knowledge of Ethyl 2-aminonicotinate

According to the analysis of related databases, 13362-26-0, the application of this compound in the production field has become more and more popular.

Application of 13362-26-0, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 13362-26-0, name is Ethyl 2-aminonicotinate, molecular formula is C8H10N2O2, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

To a stirred solution of ethyl 2-aminopyridine-3-carboxylate (1) (4.28 g, 25.8 mmol, Zhou, Z. L and al. Bioorg. Med. Chem. 2001, 9, 2061-2071) in 1,2-dimethoxyethane (DME) (100 mL) was added dropwise a solution of 1,1,3-trichloracetone (8.32 g, 51.5 mmol) in DME (15 mL). The mixture was stirred at room temperature for 76 h. The resulting precipitate was collected by filtration and washed with DME (2×15 mL). The solid was poured into dry ethanol (100 mL) and heated under reflux for 18 h. The cooled solution was evaporated and an aqueous saturated NaHCO3 solution (40 mL) was added. The mixture was extracted with CH2Cl2 and the organic layers were dried (MgSO4), filtered and evaporated to dryness. The residue was purified by chromatography using CH2Cl2 as eluent to give in order of elution: dichloro compound 2h (4.95 g, 70%); mp 108-110 C.; IR (KBr) 1719, 1279 cm-1; 1H NMR (200 MHz, CDCl3) delta 1.44 (t, 3H, J=7 Hz), 4.51 (q, 2H, J=7 Hz), 6.99 (t, 1H, J=7 Hz), 7.12 (s, 1H), 8.03 (m, 2H), 8.39 (d, 1H, J=7 Hz); 13C NMR (100 MHz, CDCl3) delta 14.3, 62.0, 65.3, 112.0, 112.7, 120.3, 130.3, 130.7, 141.6, 146.3, 163.5. MS m/z 276 (M++4, 2), 274 (M++2, 13), 272 (M+, 17), 237 (29), 202 (63), 200 (100), 166 (27), 129 (47).

According to the analysis of related databases, 13362-26-0, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Universite D’Auvergne Clermont 1; Universite Francois Rabelais Tours; Katholieke Universiteit Leuven; US2010/93781; (2010); A1;,
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