反应详情

Starting material (13(e)) was prepared as follows. 5-chlorocarbonyl-pyridine-2-carboxylic acid methyl ester was reacted with 3,4-dichlorobenzylamine analogously with preparation of compound (12(a)) in Example 12 to obtain 5(3,4-dichlorobenzylcarbamoyl)-pyridine-2-carboxylic acid methyl-ester (13(a)) as a cream solid (61%).

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