Acetone-protected acetylene-terminated

Acetone-protected acetylene-terminated products, preparation, 20 Acetone-protecting groups, cleavage of AT-products, 21 Acetylene end-capping, DMSO,... 

A relatively inexpensive 2-mcthyl-3-butyn-2-ol is also a useful protecting reagent for stable and volatile arylalkynes. Base-catalyzed retro-Favorsky elimination of acetone from alcohols RC CC(CH3)20H can be successfully applied to prepare terminal acetylenes fEq. (39)] [60]. Treatment with KOH at elevated temperatures is required for elimination of acetone. Many procedures ai e reported. 

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