Dihydroresorcinol monoethyl ether

This method has been described for the preparation of dihydroresorcinol monoethyl ether 666 Dihydroresorcinol (215 g) and 96% ethanol (300 ml) in benzene (1500 ml) containg /7-toluene-sulfonic acid (7 g) give a 90% yield of the enol ether when the mixture is boiled under a water-separator until reaction ceases. 

A2EPIN-2 -ONE, 44, 41 Dihydropyran, purification of, 41, 77 reaction with dichlorocarbene, 41, 76 Dihydroresorcinol, 41,56 methylation of, 41, 56 reaction with ethanol to yield 3-ethoxy-2-cyclohexenone, 40, 41 Dihydroresorcinoi. monoethyl ether, 40,41... 

In an analogous manner, the monoethyl ether of dihydroresorcinol reacts with alkylmagnesium halides to form 3-alkyl-2-cyclohexenones. ... 

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