Abstract

As an extension of our study of the reactivity of derivatives of 3,3,4,4-tetraethoxybut-1-yne, attempts have been made to achieve acid-catalyzed deacetalization of the diethoxymethyl moieties in 5-diethoxymethyl-1,1,2,2-tetraethoxyundeca-3,6-diyn-5-ol. That was not achieved; instead, only deketalization occurred and afforded the title compound, indicating that the triple bond activates the propargylic diethoxy moiety relative to the other acetal groups.

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