HRID1678851
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
5.86 gms. of 5-chloro-1,3-dimethyl-1H-dipyrazolo[1,5-a:4',3'-e]pyrazine-6-carboxylic acid, ethyl ester, in ethanol is refluxed with 20 mM of sodium ethylate for 30 minutes. Upon cooling, the product, 5-ethoxy-1,3-dimethyl-1H-dipyrazolo[1,5-a:4',3'-e]pyrazine-6-carboxylic acid, ethyl ester, crystallizes in the form of white needles. The product is recrystallized from n-propanol, yield 4.2 gms, m.p. 116°-118°.
WORKUP
后处理
- temperatureUpon cooling
- customthe product, 5-ethoxy-1,3-dimethyl-1H-dipyrazolo[1,5-a:4',3'-e]pyrazine-6-carboxylic acid, ethyl ester, crystallizes in the form of white needles
- customThe product is recrystallized from n-propanol, yield 4.2 gms, m.p. 116°-118°