108-47-4, Chemistry involves the study of all things chemical – chemical processes, chemical compositions and chemical manipulation – in order to better understand the way in which materials are structured, how they change and how they react in certain situations. 108-47-4, Name is 2,4-Dimethylpyridine, molecular formula is C7H9N. In a article，once mentioned of 108-47-4
A new method was found for the homogeneous liquid-phase alkylation of alpha-, beta-, and gamma-picolines with either methanol or ethanol.Addition of a catalytic amount of an ammonium halide to a mixture of a picoline and an alcohol resulted in a great increase in the yields of both side-chain and alpha-alkylated derivatives of the starting picoline when the reaction was carried out at 320-335 deg C in an atmosphere of nitrogen.The higher the reaction temperature, the greater the yields of side-chain alkylated derivatives became.In practice, this alkylation gave 2-ethylpyridine, and 2,6-lutidine from alpha-picoline with methanol, 3-ethylpyridine and 2,5-lutidine from beta-picoline from methanol, 4-ethylpyridine and 2,4-lutidine from gamma-picoline with methanol, 2-propylpyridine and 2-ethyl-6-methylpyridine from alpha-picoline with ethanol, 2-ethyl-5-methylpyridine from beta-picoline with ethanol, and 4-propylpyridine and 2-ethyl-4-methylpyridine from gamma-picoline with ethanol.Keywords-alkylation; catalyst; ammonium halide; alpha-picoline; beta-picoline; gamma-picoline; ethylpyridine; propylpyridine; methanol; ethanol
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Reference：
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis