Sequential Nucleophilic <i>C</i>
(sp<sup>3</sup>
)-Benzylation/C(sp<sup>2</sup>
)-H Arylation for the Synthesis of Spiro[oxindole-3,5′-pyrrolo[2,1-<i>a</i>
]isoquinolines]
作者:Tinglei Zhang、Baodong Cui、Wenyong Han、Nanwei Wan、Mei Bai、Yongzheng Chen
DOI:10.1002/ejoc.201700533
日期:2017.6.16
using sequential nucleophilic C(sp3)-benzylation and palladium-catalyzed C(sp2)–H arylation reactions of 3-pyrrolyloxindoles and 2-(bromomethyl)aryl bromides, a series of spiro[oxindole-3,5′-pyrrolo[2,1-a]isoquinolines] were smoothly obtained in up to 92 % yield. A synthetic application of this method was also demonstrated by the transformation of 3u into functionalized compound 4. Moreover, the catalytic
已经描述了一种合成具有 3,3'-二取代羟吲哚骨架的螺环吲哚里西啶衍生物的有效策略。通过使用顺序亲核 C(sp3)-苄基化和钯催化的 C(sp2)-H 芳基化反应,3-吡咯并吲哚和 2-(溴甲基)芳基溴化物,一系列螺[oxindole-3,5'-吡咯并[2 ,1-a]异喹啉]以高达 92% 的产率顺利获得。通过将 3u 转化为官能化化合物 4 也证明了该方法的合成应用。此外,该级联反应的催化循环是在对照实验结果的基础上提出的。