Sep 2021 News Introduction of a new synthetic route about 770-08-1

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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. 770-08-1, name is 5-Ethylpicolinic acid. A new synthetic method of this compound is introduced below., Product Details of 770-08-1

a. Benzyl (5-Ethyl-2-pyridyl)carbamate Diphenylphosphoryl azide (4.04 g., 14.7 mmoles) was added to a solution of 5-ethylpyridine-2-carboxylic acid (2.22 g., 14.7 mmoles), triethylamine (1.485 g., 14.7 mmoles), and benzyl alcohol (1.75 g., 16.17 mmoles) in 1,4-dioxane (23.5 ml.), and the mixture heated under reflux for one hour. The 1,4-dioxane was removed under reduced pressure. A solution of the residue in toluene was washed successively with water, aqueous sodium bicarbonate, and brine, and was then dried over sodium sulfate. The toluene was removed and the residue recrystallized from 2-propanol to give benzyl (5-ethyl-2-pyridyl)carbamate (1.9 g., 50.5%), m.p. 125-127. An analytical sample had m.p. 127-130. Anal. Calcd for C15 H16 N2 O2: C, 70.29; H, 6.29; N, 10.93. Found: C, 70.01; H, 6.32; N, 10.72.

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Reference:
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