Communication to the Editor 1881 acetylenic carbinol had been added and 36 g. (0.5 mole) of ethyl methyl ketone was dropped in. The mixture was stirred for two hours longer and poured into a mixture of 90 ml. (1.1 moles) of concentrated hydrochloric acid and 200 g. of ice. After the magnesium hydroxide had dissolved, the layers were separated, the water layer extracted with ether. After drying the ether solution over anhydrous sodium sulfate, the solvent was removed by distillation. The residue was heated in an an oil-bath to 110 0 under 18 mm. of pressure to remove volatile material. The residue was recrystallized from petroleum ether (b. p. 30-60°). The product was deposited from the petroleum ether in white needles melting at 69-70°and weighed 57 g.
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