HRID1606540
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
34.5 g. of 4-[[3-(dimethylamino)propyl]amino]-6-chloro-2-methyl-5-nitropyridine-3-carboxylic acid, ethyl ester are dissolved in 100 ml. of ethanol. 15 g. of sodium sulfide in 10 ml. of water are added and the mixture is stirred without cooling for 1 hour. After this time, the precipitated 4-[[3-(dimethylamino)propyl]amino]-6-mercapto-2-methyl-5-nitropyridine-3-carboxylic acid, ethyl ester is filtered off and recrystallized from methanol, yield 18 g. (53%), m.p. 131°-132°.
WORKUP
后处理
- temperaturewithout cooling for 1 hour
- filtrationAfter this time, the precipitated 4-[[3-(dimethylamino)propyl]amino]-6-mercapto-2-methyl-5-nitropyridine-3-carboxylic acid, ethyl ester is filtered off
- customrecrystallized from methanol, yield 18 g