HRID1415136

反应详情

EQUATION

反应方程式

HRID 1415136 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

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

  1. customAt 50° C.
  2. customprecipitates