C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 29/42 (2006.01) C07C 33/044 (2006.01)
Patent
CA 2340697
The invention relates to a method for producing alkyne diols by reacting ketones with acetylenic hydrocarbons in an organic solvent in the presence of a base which contains potassium alcoholates of primary and/or secondary alcohols. The alkyne diols are produced while forming adducts which precipitate out of the reaction mixture and which are comprised of alkyne monoalcohols and/or alkyne diols and a base. The stoichiometries of the reaction partners are selected such that gelatinous adducts are formed which comprise a spherical surface, whereby the reaction mixture remains agitable during the entire reaction.
L'invention concerne un procédé pour la préparation de diols d'alkine par réaction de cétones avec des hydrocarbures acétyléniques dans un solvant organique en présence d'une base contenant des alcoolats de potassium d'alcool primaire et/ou secondaire, avec formation de produits d'addition issus du mélange de réaction et constitués de monoalcools d'alkine et/ou de diols d'alkine et d'une base. Les stoechiométries des partenaires réactionnels sont choisies de telle manière que se forment des produits d'addition du type gel présentant une surface sphérique, ce qui permet au mélange de réaction de demeurer sous agitation pendant toute la réaction.
Brunner Melanie
Henkelmann Jochem
Kindler Alois
Tragut Christian
Basf Aktiengesellschaft
Robic
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