<scp>Palladium‐Catalyzed</scp>
Oxidative C≡C Triple Bond Cleavage of
<scp>2‐Alkynyl</scp>
Carbonyl Compounds Toward 1,
<scp>2‐Dicarbonyl</scp>
Compounds
<sup>†</sup>
作者:Ming‐Bo Zhou、Mu‐Jia Luo、Ming Hu、Jin‐Heng Li
DOI:10.1002/cjoc.202000040
日期:2020.6
palladium‐catalyzed oxidative strategy for the cleavage of the C≡C triple bond is presented. By employing PdCl2, CuBr2, TEMPO and air as the catalytic system and H2O as the carbonyl oxygen atom source, a wide range of 2‐alkynyl carbonyl compounds, including 1,3‐disubstituted prop‐2‐yn‐1‐ones, propiolamides and propiolates, lost an alkynyl carbon to access various 1,2‐dicarbonyl compounds, e.g., 1,2‐diones
提出了一种新的,一般的钯催化的氧化C≡C三键的氧化策略。通过使用PdCl 2,CuBr 2,TEMPO和空气作为催化体系,并使用H 2 O作为羰基氧原子源,可以使用多种2-炔基羰基化合物,包括1,3-二取代的prop-2-yn-1炔烃。丙酰胺和丙酸酯类化合物通过Wacker氧化,分子内环化和C-C键失去炔基碳而无法获得各种1,2-二羰基化合物,例如1,2-二酮,2-酮酰胺和2-酮酯卵裂级联