One-pot chemoselective reductive alkylation of nitroarenes: A new general method of synthesis of alkylanilines
作者:Giuseppe Bartoli、Marcella Bosco、Renato Dal Pozzo、Marino Petrini
DOI:10.1016/s0040-4020(01)83464-5
日期:1987.1
A New facile and general synthesis of alkylanilines by one-pot reductive alkylation of nitroarenes is reported. This method is based on the “in situ” reduction by hydrides (LiAlH4 or NaBH4) in the presence of catalytic amounts of PdC, of nitronate adducts arising from the conjugate addition of Grignard reagents to mononitroarenes. LiAlH4 showed to be a more efficient but less selective reducing agent
报道了一种通过硝基芳烃的一锅还原烷基化的烷基苯胺的新的容易和通用的合成方法。该方法基于氢化物(LiAlH 4或NaBH 4)在催化量的PdC,由格氏试剂到单硝基芳烃的共轭加成而产生的硝酸盐加合物中的“原位”还原。与NaBH 4相比,LiAlH 4被证明是一种更有效但选择性更低的还原剂。该反应可以成功地应用于单,均和杂双环系统,并允许引入各种各样的烷基链而没有异构化现象。