Solvent-Free, Microwave-Assisted N-Arylation of Indolines by using Low Palladium Catalyst Loadings
作者:Luca Basolo、Alice Bernasconi、Elena Borsini、Gianluigi Broggini、Egle M. Beccalli
DOI:10.1002/cssc.201100098
日期:2011.11.18
is prepared by a solvent‐free, palladium‐catalyzed procedure. The procedure requires only low loadings of catalyst, uses microwave irradiation, and starts from commercially available substrates. The method proceeds in good yields and in short reaction times with aryl bromides, chlorides, and iodides, also on 2‐substituted indolines. The combination of solvent‐free methods with microwave heating will
基于二氢吲哚的化合物性质丰富,并且二氢吲哚骨架是一系列生物活性生物碱,药物活性化合物和功能分子(例如,太阳能电池的敏化剂)中经常遇到的支架。广泛的用途使人们对这类化合物的结构改性产生了进一步的兴趣。一系列取代的N芳基二氢吲哚是通过无溶剂,钯催化的方法制备的。该过程仅需少量的催化剂,使用微波辐射,并从可商购的基材开始。该方法在2-取代的二氢吲哚上也能以良好的收率和较短的时间与芳基溴化物,氯化物和碘化物进行反应。在寻求更环保的合成方法时,将无溶剂方法与微波加热相结合将进一步提高重要性。