Application of 133627-45-9, 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. 133627-45-9, name is 2-Chloro-4-methylpyridin-3-amine, molecular formula is C6H7ClN2, 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.
A mixture of 2-chloro-4-methylpyridin-3-amine (1.0 g, 7.0 mmol) and concentrated hydrochloric acid (4.4 mL) was cooled to 0 C and a solution of sodium nitrite (0.5 g, 7.5 mmol) in water (8 mL) was added dropwise. The mixture was stirred for 1 hour at 0 C and then was added dropwise to a stirred solution of potassium iodide (1.6 g, 9.6 mmol) in water (9 mL). The mixture was warmed to ambient temperature and stirred overnight. The mixture was extracted with diethyl ether and the organic phase was washed with aqueous sodium thiosulphate, brine, dried (MgSO4) and evaporated in vacuo. The crude product was recrystallized from hexane to give the title compound (0.88 g, 47%) as a white solid. LRMS (m/z): 254 (M+1)+. 1H-NMR delta (CDCl3): 2.50 (s, 3H), 7.05 (d, J=4.9 Hz, 1 H), 8.15 (d, J=4.9 Hz, 1 H).
According to the analysis of related databases, 133627-45-9, the application of this compound in the production field has become more and more popular.
Reference:
Patent; Laboratorios Almirall, S.A.; EP2113503; (2009); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem