Reacción #3862

Ecuación de reacción

6-methoxy-4-benzopyranone

triethylamine

→

product

6-Methoxy-4-hydroxy-2,3-dihydrobenzopyran

Disolventes

ethanol

Condiciones de reacción

Tratamiento posterior

1. 1
   FiltraciónThe reaction mixture is filtered
2. 2
   Otroevaporated in vacuo

Procedimiento

A solution of 6-methoxy-4-benzopyranone (31.6 g), triethylamine (4.9 ml) and 10% palladium on carbon (3.16 g) in absolute ethanol (1.7 l) is stirred under an atmosphere of hydrogen for 19 hours. The reaction mixture is filtered and evaporated in vacuo yielding the desired hydrogenated product as a pale yellow liquid.

Fuente