Electric Literature of 53636-65-0, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 53636-65-0, name is 5-Methylpyridine-2,3-dicarboxylic acid, molecular formula is C8H7NO4, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.
EXAMPLE 44 Preparation of 5-chloromethyl-2,3-pyridinedicarboxylic acid anhydride STR107 A solution of 75.0 g (0.41 m) of 5-methyl-2,3-pyridinedicarboxylic acid in 500 mL of 1,2-dimethoxyethane is treated with 125 g acetic anhydride (1.2 m) and 81 g pyridine (1.02 m). The resulting solution is stirred for 18 hours at room temperature. The solution is stripped in vacuo to leave 70.3 g (100%) of 5-methyl-2,3-pyridinedicarboxylic acid anhydride.
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Reference:
Patent; American Cyanamid Company; US5334576; (1994); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem