تفاعل #3865

معادلة التفاعل

8-methoxy-4-benzopyranone

triethylamine

→

desired product

4-Hydroxy-8-methoxy-2,3-dihydrobenzopyran

المذيبات

ethanol

ظروف التفاعل

المعالجة

1. 1
   ترشيحThe resulting solid is filtered
2. 2
   غسيلwashed with diethyl ether
3. 3
   أخرىevaporated in vacuo

الإجراء التجريبي

A solution of 8-methoxy-4-benzopyranone (31.6 g), triethylamine (4.9 ml) and 10% palladium on carbon (3.1 g) in absolute ethanol (1.7 l) is stirred under an atmosphere of hydrogen (P=52 lbs.) overnight. The resulting solid is filtered, washed with diethyl ether and evaporated in vacuo yielding the desired product as a solid.

المصدر