Methods of making indazoles are described. The methods involved reacting an aromatic aldehyde with a nitrogen source to form a nitroso aromatic aldehyde. The nitroso aromatic aldehyde is reacted with a reducing agent to form an indazole which ultimately can be used to form desired indazoles which are preferably pharmaceutically active products. The process of the present invention further permits the formation of enantiomerically enriched or pure indazoles such as aminoalkyl indazoles.
本文描述了制备
吲唑的方法。该方法涉及将芳香醛与氮源反应,形成亚硝基芳香醛。然后将亚硝基芳香醛与还原剂反应,形成
吲唑,最终可以用于形成所需的
吲唑,这些
吲唑最好是具有药理活性的产品。本发明的过程还允许形成对映富集或纯的
吲唑,例如
氨基烷基
吲唑。