One-pot synthesis of substituted indoles via titanium(iv) alkoxide mediated imine formation – copper-catalyzed N-arylation
作者:Ferdinand S. Melkonyan、Daniil E. Kuznetsov、Marina A. Yurovskaya、Alexander V. Karchava
DOI:10.1039/c3ra40389k
日期:——
Readily accessible o-bromobenzylketones and primary alkyl amines and anilines were used for the construction of substituted indoles in good to excellent yields. The sequence involves a titanium-mediated reaction of ketones with amines to afford imines and subsequent intramolecular cyclization into indoles employing copper catalysis. The two-step protocol allows for the preparation of indoles bearing