硝基芳族化合物在金属催化反应中可以被炔还原为吲哚 ,反应经过Ｎ—中心还原、Ｃ—Ｈ活化和Ｃ—Ｎ与Ｃ—Ｃ键的形成等过程 ,收率中等。　　研究者曾发现 ,亚硝基芳族化合物也能与炔的衍生物反应生成吲哚 ,所以认为在上述的催化还原环化反应中 ,亚硝基化合物可能是反应的中间体 Nitroaromatic compounds can be alkyne reduced to indoles in metal catalysis, N-center reduction, C-H activation and formation of C-N and C-C bonds. The yield is moderate. Researchers have found that nitrosoaromatic compounds can react with alkyne derivatives to form indoles, so nitroso compounds may be considered as intermediates in the above catalytic reduction cyclization reaction