Ethylene Glycol → 2-Methyl-2-phenyl-1,3-dioxolane

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Reaction Steps

Utilising known reaction conditions compounds of Formula 1, where R and R1 are hydrogen or R is hydrogen and R1 is a C1-40 alkyl, C2-40 alkenyl, C2-40 alkynyl, aryl or C1-8 alkylaryl fragment, readily catalyse the ketalisation of ketones. Standard conditions were used to conduct these reactions. For example heating under a Dean and Stark apparatus acetophenone and an excess of ethylene glycol in benzene or toluene in the presence of compounds of Formula 1 where R and R1 are hydrogen gave the desired product 2-methyl-2-phenyl-1,3-dioxolane in quantitative yield.

Provenance & Evidence