Copper-Catalyzed Carbonyl Group Controlled Coupling of Isatin Oximes with Arylboronic Acids To Prepare <i>N</i>
-Aryloxindole Nitrones
作者:Xue-Ling Mo、Chun-Hua Chen、Cui Liang、Dong-Liang Mo
DOI:10.1002/ejoc.201701324
日期:2018.1.17
prepared in good to excellent yields by copper-catalyzed coupling of N-unprotected isatin oximes with aryl boronic acids under mild reaction conditions. The reaction was tolerant various arylboronic acids with diverse sensitive functional groups. Detailed studies showed that the carbonyl group in isatin oximes might be served as a carbonyl ligand or a controlled group playing important roles in the formation
在温和的反应条件下,通过 N-未保护的靛红肟与芳基硼酸的铜催化偶联,制备了多种 (E)-N-芳基羟吲哚硝酮,收率良好至极好。该反应耐受具有多种敏感官能团的各种芳基硼酸。详细研究表明,靛红肟中的羰基可能作为羰基配体或受控基团在(E)羟吲哚硝酮的形成中起重要作用。这种用于制备 (E)-N-芳基羟吲哚硝酮的方法很容易在克级规模下进行,并且可以有效地以高产率合成雌酮衍生的羟吲哚硝酮。