A process of preparing 4-substituted pyridine compounds via pyridine betaine compounds. Ein Prozeß des Vorbereitens der Mittel des Pyridins 4-substituted über Pyridinbetainmittel.
A process of preparing 4-substituted pyridine compounds via pyridine betaine compounds.
Ein Prozeß des Vorbereitens der Mittel des Pyridins 4-substituted über Pyridinbetainmittel.
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