THE REACTION OF LITHIUM TRIALKYL(1-ALKYNYL)BORATES WITH ORTHOESTERS IN THE PRESENCE OF TITANIUM TETRACHLORIDE. A NEW SYNTHESIS OF α,β-UNSATURATED CARBONYL COMPOUNDS
作者:Shoji Hara、Hidetaka Dojo、Akira Suzuki
DOI:10.1246/cl.1983.285
日期:1983.3.5
Trialkyl(1-alkynyl)borates readily available from trialkylboranes and lithium acetylides react with orthoesters in the presence of titanium tetrachloride, followed by the oxidation with hydrogen peroxide and sodium hydroxide to give the corresponding α,β-unsaturated carbonyl compounds.
三烷基(1-炔基)硼酸盐很容易从三烷基硼烷和乙炔锂中获得,在四氯化钛存在下与原酸酯反应,然后用过氧化氢和氢氧化钠氧化,得到相应的 α,β-不饱和羰基化合物。