Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 7379-35-3, name is 4-Chloropyridine hydrochloride. A new synthetic method of this compound is introduced below., 7379-35-3
B4c. General Method for Substituted Aniline Synthesis Via Nucleophilic Aromatic Substitution Using a Halopyridine; Step 1. Methyl(4-nitrophenyl)-4-pyridylamine; To a suspension of N-methyl-4-nitroaniline (2.0 g, 13.2 mmol) and K2CO3 (7.2 g, 52.2 mmol) in DMPU (30 mL) was added 4-chloropyridine hydrochloride (2.36 g, 15.77 mmol). The reaction mixture was heated at 90¡ã C. for 20 h, then cooled to room temperature. The resulting mixture was diluted with water (100 mL) and extracted with EtOAc (100 mL). The organic layer washed with water (100 mL), dried (Na2SO4) and concentrated under reduced pressure. The residue was purified by column chromatography (silica gel, gradient from 80percent EtOAc/20percent hexanes to 100percent EtOAc) to afford methyl(4-nitrophenyl)-4-pyridylamine (0.42 g)
At the same time, in my other blogs, there are other synthetic methods of this type of compound,7379-35-3, 4-Chloropyridine hydrochloride, and friends who are interested can also refer to it.
Reference:
Patent; Dumas, Jacques; Khire, Uday; Lowinger, Timothy B.; Paulsen, Holger; Riedl, Bernd; Scott, William J.; Smith, Roger A.; Wood, Jill E.; Hatoum-Mokdad, Holia; Johnson, Jeffrey; Lee, Wendy; Redman, Aniko; Sibley, Robert; Renick, Joel; US2007/244120; (2007); A1;,
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