Acid-Catalyzed Transformation of α-Hydroxy-γ-oxo Acetals to γ-Oxo Esters. A Novel Deconjugation of 4-Oxo-2-alkenal Acetals
作者:Shuji Kanemasa、Norihiko Nakagawa、Hiroyuki Suga、Otohiko Tsuge
DOI:10.1246/bcsj.62.180
日期:1989.1
acid catalysis, α-hydroxy-γ-oxo acetals which are readily available from the nitrile oxide cycloaddition route are smoothly converted into γ-oxo esters. This unusual and high-yield transformation involves rare acid-catalyzed deconjugation of the intermediary 4-oxo-2-alkenal acetals and is influenced by a substituent at the 5-position.
在酸催化下,易于从氧化腈环加成路线获得的 α-羟基-γ-氧代缩醛顺利转化为 γ-氧代酯。这种不寻常且高产的转化涉及中间 4-氧代-2-烯醛缩醛的稀有酸催化解偶联,并受 5 位取代基的影响。