Pharmaceutical and chemical intermediates and relevant chemicals, and relates to a novel preparation method of N-substituted dibenzo[a,c]carbazole compound. O-alkynylaniline and derivatives thereof as raw materials conduct a cascade cyclization reaction in an anhydrous organic solvent in the presence of catalysts, oxidants and additives, and are converted into the N-substituted dibenzo[a,c]carbazole compound. The preparation method of the N-substituted dibenzo[a,c]carbazole compound has fewer reaction steps, low cost of raw material, mild reaction conditions and convenient operation. Moreover, the obtained product has high yield and high purity, fully meets the quality requirements for drug intermediates, and provides favorable conditions for the industrial production.
医药化工中间体及相关
化学品,涉及一种新型的N-取代二苯并[a,c]
咔唑化合物的制备方法。以 O-炔基
苯胺及其衍
生物为原料,在催化剂、氧化剂和添加剂存在下,在无
水有机溶剂中进行级联环化反应,转化为 N-取代二苯并[a,c]
咔唑化合物。该 N-取代二苯并[a,c]
咔唑化合物的制备方法反应步骤少,原料成本低,反应条件温和,操作方便。此外,所得产品收率高、纯度高,完全符合药物中间体的质量要求,为工业化生产提供了有利条件。