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. 71670-70-7, name is 2-(Chloromethyl)-5-methylpyridine hydrochloride. A new synthetic method of this compound is introduced below., Application In Synthesis of 2-(Chloromethyl)-5-methylpyridine hydrochloride
EXAMPLE 10 Preparation of 1,5,6,7-tetrahydro-2-[[(5-methyl-2-pyridyl)methyl]thio]indeno(5,6-d)imidazole To 13.5 g of 1,5,6,7-tetrahydroindeno(5,6-d)imidazole-2-thiol, suspended in 200 ml of alcohol, were added dropwise while stirring 5.9 g of sodium hydroxide in 100 ml of water and, after 30 minutes, 13.0 g of 5-methyl-2-chloromethyl-pyridine hydrochloride were added. The mixture was left to boil at reflux overnight, then evaporated and the residue was taken up in methylene chloride. This was washed neutral and, after drying over sodium sulfate, evaporated in vacuo. The residue, recrystallized from acetonitrile, gave 11.9 g (56.9% of theory) of 1,5,6,7-tetrahydro-2-[[(5-methyl-2-pyridyl)methyl]thio]indeno(5,6-d)imidazole of melting point 157-158 C. The mother liquor was evaporated, the residue was dissolved while heating in methanol, and the solution was treated with 5 N hydrochloric acid in ethyl acetate.
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Reference:
Patent; Hoffmann-La Roche Inc.; US4435406; (1984); A;,
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