METHOD FOR PREPARING ALKYNE DIOLS POSSIBLY COMPRISING ALKYNE MONOALCOHOLS

FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to method for preparing alkyne diols possibly comprising alkyne mono- alcohols. Method involves interaction of ketones with acetylene hydrocarbons on organic solvent medium in the presence of a base followed by hydrolysis and isolation of the end substance. Acetylene hydrocarbons are taken among acetylene and alkyne aminoalcohols. Potassium alcoholates of primary and/or secondary alcohols or potassium alcoholates of primary and/or secondary alcohols containing KOH are used as a base. In using acetylene as an acetylene hydrocarbon the ratio of used ketone to acetylene is from 1.9:1 to 2.1:1 and the ratio of potassium alcoholate to used ketone is from 0.9:1 to 2.1: 1; in using alkyne monoalcohols as acetylene hydrocarbons the ratio of used alkyne monoalcohol to used ketone is from 1:0.8 to 1:1.2 and the ratio of potassium alcoholate to used ketone is from 1.5:1 to 2.2:1 to yield precipitating gel-like adducts of alkyne diols and, possibly, alkyne monoalcohol and a base. As result, the reaction mass retains capacity for stirring for all reaction time followed by hydrolysis of components. Method provides reducing amount of used solvent and provides preparing substances with improved indices for the further using. EFFECT: simplified and improved preparing method. 8 cl, 10 ex