Verfahren zur Herstellung von Verbindungen mit Alk-3-en-1-ol-Struktur

摘要

1,208,835. Production of alk-3-en-1-ols. BADISOHE ANILIN- & SODA-FABRIK A.G. 23 Feb., 1968 [25 Feb., 1967 (3); 30 Dec., 1967], No. 8881/68. Heading C2C. Alk-3-en-1-ols are prepared by reacting an olefinically unsaturated hydrocarbon bearing at least one hydrogen atom on at least one carbon atom adjacent to the carbon atoms of the double bond at from 235‹ to 400‹ C. with an aldehyde in the absence of an acid catalyst. By the term "alk-3-en-1-ols" is meant an acyclic or cyclic compound which is an olefinically unsaturated primary or secondary alcohol in which the carbon atom bearing the hydroxy group is separated from the nearest carbon atom bearing a double bond by a single carbon atom. The reaction is preferably carried out in the presence of a base comprising from 0À001 to 10% by weight of the total weight of the reaction mixture. It is not necessary to start from the free aldehyde, and hydrates, acetals, oligomers or polymers of aldehydes may be used. Alcohols which dehydrate under the reaction conditions to olefins may be used in the process as olefin precursors. The reaction may be carried out in the presence of a substance having a large surface area.