<scp>l</scp>-Proline-catalyzed regioselective C1 arylation of tetrahydroisoquinolines through a multicomponent reaction under solvent-free conditions
作者:Iftakur Rahman、Bhaskar Deka、Ranjit Thakuria、Mohit L. Deb、Pranjal K. Baruah
DOI:10.1039/d0ob01363c
日期:——
Here we disclose the C1 arylation of tetrahydroisoquinolines (THIQ) through regioselective C(sp3)–H functionalization using a multicomponent reaction. The reaction was performed by reacting THIQ, aldehydes and aminopyrazoles or indoles under neat conditions with L-proline as a catalyst. The regioselectivity of the products was confirmed by X-ray analysis and spectroscopic data. The formation of an
Oxidative Dehydrogenative Couplings of Pyrazol-5-amines Selectively Forming Azopyrroles
作者:Bo Jiang、Yi Ning、Wei Fan、Shu-Jiang Tu、Guigen Li
DOI:10.1021/jo5004967
日期:2014.5.2
dehydrogenative couplings of pyrazol-5-amines for the selective synthesis of azopyrrole derivatives have been described. The former reaction simultaneously installs C–I and N–N bonds through iodination and oxidation, whereas the latter involved a copper-catalyzed oxidative coupling process. The resulting iodo-substituted azopyrroles were employed by treatment with various terminal alkynes through Sonogashira