6-(cyclopropylmethoxy)-5-(tetrahydrofuran-3-yl)-pyridine-2-carboxylic acid methyl ester 、
6-(cyclopropylmethoxy)-5-(tetrahydrofuran-2-yl)-pyridine-2-carboxylic acid methyl ester 、 、
sodium hydroxide 在
水 、
乙酸乙酯 、
盐酸 作用下,
以
乙醇 为溶剂,
反应 2.0h,
以to give 6-(cyclopropylmethoxy)-5-(tetrahydrofuran-3-yl)-pyridine-2-carboxylic acid (d1) and 6-(cyclopropylmethoxy)-5-(tetrahydrofuran-2-yl)-pyridine-2-carboxylic acid (d2) (mixture, d1: d2=3:2, 0.33 g, 1.3 mmol, 100%) as yellow solid的产率得到6-(cyclopropylmethoxy)-5-(tetrahydrofuran-3-yl)-pyridine-2-carboxylic acid