Rhodium(II) acetate catalysed reaction of α-diazo-β-ketoesters with N-methylanilines results in carbenoid insertion into the N-H bond; the resulting α-(N-arylamino)ketones cyclise to give indoles upon treatment with acidic ion-exchange resin.
在
醋酸铑(II)催化下,δ-偶氮δ-酮ters 与
N-甲基苯胺发生反应,导致类羰基插入 N-H 键;生成的δ-(N-芳基
氨基)酮在酸性离子交换
树脂的处理下环化生成
吲哚。