PdII-Catalyzed CH Olefination of N-(2-Pyridyl)sulfonyl Anilines and Arylalkylamines
作者:Alfonso García-Rubia、Beatriz Urones、Ramón Gómez Arrayás、Juan C. Carretero
DOI:10.1002/anie.201105611
日期:2011.11.11
N‐(2‐pyridyl)sulfonyl group acts as a removable directing group in the PdII‐catalyzed aryl CH ortho alkenylation of N‐alkyl aniline, benzylamine, and phenethylamine derivatives with electron‐poor alkenes. The products were obtained in high yields (70–90 %) and with complete regiocontrol. The mild reductive N‐sulfonyl removal enables the construction of a variety of nitrogen heterocycles. EWG=electron‐withdrawing
柔性朋友:本ñ - (2-吡啶基)磺酰基作为在钯可拆卸的定向基团II催化的芳基C ħ邻位 的烯基化Ñ烷基苯胺,苄胺,和苯乙胺与缺电子烯烃衍生物。获得的产品收率高(70–90%),并且具有完全的区域控制能力。温和的还原性N-磺酰基去除可构建各种氮杂环。EWG =吸电子基团。