تفاعل #519093

معادلة التفاعل

5-hydroxynicotinic acid methyl ester

triethylamine

5-hydroxynicotinoyl chloride

5-hydroxynicotinic acid hydrochloride

→

3-(2-pyridyl)-5-(5-hydroxy-pyrid-3-yl)-1,2,4-oxadiazole

المردود 21.0%

المذيبات

dichloromethane

dimethylformamide

ظروف التفاعل

المعالجة

1. 1
   أخرىwhich was obtained form

الإجراء التجريبي

In a similar fashion, 5-hydroxynicotinoyl chloride was prepared from 5-hydroxynicotinic acid hydrochloride, which was obtained form the hydrolysis of 5-hydroxynicotinic acid methyl ester (1.53 g, 10 mmol). Treatment of the acid chloride with pyrid-2-ylamidoxime (1.37 g, 10 mmol) and triethylamine (4.04g, 40 mmol) in dichloromethane (10 mL), followed by heating in dimethylformamide (20 mL) at 120° C. for 2 hours afforded 497 mg (21%) 3-(2-pyridyl)-5-(5-hydroxy-pyrid-3-yl)-1,2,4-oxadiazole.

المصدر