There is provided a novel process for producing an indole derivative which comprises cyclizing 2-nitrobenzylcarbony compound in the presence of a catalyst comprising a Group VIII metal of the Periodic Table, characterized by conducting the cyclization in a gas atmosphere containing carbon monoxide. The process enables an indole compound to be selectively produced in a high yield from 2-nitrobenzylcarbonyl compound, and hardly yields an indoline compound as a reduction by-product that has been a problem in the catalytic hydrogenation method employing a noble metal catalyst. The indole derivative produced by the present process is useful for various fine chemical intermediates including compounds and physiologically active substances such as pharmaceuticals and agrochemicals.
提供了一种生产
吲哚衍
生物的新方法,包括在存在周期表第VIII族
金属的催化剂的情况下,使2-硝基苄酰化合物环化,其特征在于在含有
一氧化碳的气氛中进行环化。该方法使得可以从2-硝基苄酰化合物中选择性地高产率地生产
吲哚化合物,并且几乎不产生
吲哚啉化合物作为催化氢化方法中使用
贵金属催化剂时的还原副产物,这一直是一个问题。由本方法生产的
吲哚衍
生物可用于各种精细
化学中间体,包括药物和农药等化合物和生理活性物质。