REACTION OF ALDEHYDES WITH 1,3-DICARBONYL COMPOUNDS IN THE PRESENCE OF POTASSIUM CARBONATE. A CONVENIENT SYNTHESIS OF α,β-UNSATURATED CARBONYL COMPOUNDS VIA DEACYLATION
作者:Sadao Tsuboi、Takaaki Uno、Akira Takeda
DOI:10.1246/cl.1978.1325
日期:1978.12.5
Condensation of aldehydes with 1,3-dicarbonyl compounds such as 2,4-pentanedione (2), ethyl 2-chloro-3-oxobutanoate (4), 3-chloro-2,4-pentanedione (5), and α-acetyl-γ-butyrolactones, catalyzed by potassium carbonate proceeded via deacylation under mild conditions to give α,β-unsaturated ketones and esters in one step.
醛与 1,3-二羰基化合物的缩合,例如 2,4-戊二酮 (2)、2-氯-3-氧代丁酸乙酯 (4)、3-氯-2,4-戊二酮 (5) 和 α-乙酰基-γ-丁内酯,在碳酸钾的催化下,在温和条件下通过脱酰反应一步得到α,β-不饱和酮和酯。