Pyrogallol → 1,3,5-tris(2-hydroxyethoxy)benzene

Participants

Reaction Conditions

Reaction Steps

Pyrogallol (378.3 g., 3 moles) and sodium hydroxide (0.5 g.) are charged into a one-liter autoclave. The mixture is heated to 140° C., purged three times with nitrogen and subjected to a vacuum of 20 mm Hg for one-half hour. Ethylene oxide (396 g., 9 moles) is then added at 30 psig; after all the ethylene oxide is consumed, the autoclave is purged two times with nitrogen and cooled to 30° C. Two hundred grams of the product is withdrawn and 10 g. of potassium hydroxide pellets is added to the autoclave. The autoclave is purged three times with nitrogen at 150° C. Acetylene (100 psig.) then is added and heating is continued for 16 hours to provide the trivinyl ether of 1,3,5-tris-(2-hydroxyethoxy) benzene, having the formula: ##STR3##

Provenance & Evidence