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。