HRID1415136
反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
27.9 g. of 4,6-dichloro-2-methyl-5-nitropyridine-3-carboxylic acid ethyl ester (0.1 mol.) are dissolved in about 100 ml. methanol. At 50° C., 9.2 g. of methylhydrazine are dropped in and the mixture is stirred for 30 minutes. On cooling 4-chloro-6-(1-methyl)hydrazine-2-methyl-5-nitropyridine-3-carboxylic acid ethyl ester precipitates. Yield 18 g. (62.2%), m.p. 159°-161° (methanol).
WORKUP
后处理
- customAt 50° C.
- customprecipitates