반응 #1066655

반응 방정식

8-methoxy-4-benzopyranone

triethylamine

→

desired product

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

용매

ethanol

반응 조건

후처리

1. 1
   여과The resulting solid is filtered
2. 2
   세척washed with diethyl ether
3. 3
   기타evaporated in vacuo

실험 절차

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.

출처