New Ligands for a General Palladium-Catalyzed Amination of Aryl and Heteroaryl Chlorides
作者:Franck Rataboul、Alexander Zapf、Ralf Jackstell、Surendra Harkal、Thomas Riermeier、Axel Monsees、Uwe Dingerdissen、Matthias Beller
DOI:10.1002/chem.200306026
日期:2004.6.21
prepared, the new dialkyl-2-(N-arylindolyl)phosphines (cataCXium P) perform excellently in the palladium-catalyzed amination of aryl and heteroaryl chlorides. Coupling of both activated and deactivated chloroarenes proceeds under mild conditions (room temperature to 60 degrees C). By using optimized conditions remarkable catalyst productivity (total turnover number, TON, up to 8000) and activity (turnover
描述了单齿N-取代的杂芳基膦的合成和应用。通常,通过使用正丁基锂/四甲基乙二胺(TMEDA)在相应的N-取代的杂环(吡咯,吲哚)的2-位选择性金属化,然后用二烷基-或二芳基氯膦淬灭,方便地制备配体。在制备的不同配体中,新的二烷基-2-(N-芳基吲哚基)膦(cataCXium P)在钯催化的芳基氯化物和杂芳基氯化物的胺化反应中表现出色。在温和的条件下(室温至60摄氏度)进行活化和失活的氯代芳烃的偶联反应。通过使用优化的条件,可显着提高催化剂的生产率(总周转率(TON),最高8000)和活性(周转频率,