D. Lomov, M. G. Abramyants, O. O. Zaporozhets, T. M. Pekhtereva
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Quaternization of Methyl Picolinate with Some Phenacyl Bromides. Synthesis of DL-Baikiain Alkaloid
By fusing methyl picolinate with phenacyl bromides, the corresponding phenacyl salts were obtained, cyclization of which in acetic anhydride led to previously undescribed 3-aryl-1H-pyrido[2,1-c][1,4]oxazinium bromides. Reduction of the quaternary salts of methyl picolinate followed by acid hydrolysis leads to the alkaloid DL-baikiain.
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