Palladium-Catalyzed CC Coupling of Aryl Halides with Isocyanides: An Alternative Method for the Stereoselective Synthesis of (3E)-(Imino)isoindolin-1-ones and (3E)-(Imino)thiaisoindoline 1,1-Dioxides
transformation successfully extends itsapplication for the synthesis of phenanthridines and dibenzooxazepines. This new synthetic protocol not only extends the application platform for palladium-catalyzed CC coupling of aryl halides with isocyanides, but also opens atom-economic and step-economic synthetic routes for nitrogen-containing heterocyclic compounds with wide functional group compatibility.
Glycosyl Triazole Based Pyridinamide/CuI-Catalyzed Coupling of 2-Halobenzamides with Active Methylene Compounds
作者:Vinod K. Tiwari、Sumit K. Singh、Sunil Kumar、Mangal S. Yadav、Subrato Bhattacharya
DOI:10.1055/a-2157-9001
日期:2024.3
3-triazole-based pyridinamide ligands. The catalytic system effectively works for the coupling of N-substituted 2-halobenzamides with various active methylene compounds to form biologically relevant heterocyclic scaffolds in high to excellent yields. The consecutive path of the reaction including intermolecular C–C cross-coupling followed by intramolecularcyclization efficiently takes place at low catalytic loading
Synthesis of 3-Substituted and 2,3-Disubstituted Quinazolinones via Cu-Catalyzed Aryl Amidation
作者:Lanting Xu、Yongwen Jiang、Dawei Ma
DOI:10.1021/ol300084v
日期:2012.2.17
Cul/4-hydroxy-L-proline catalyzed coupling of N-substituted o-bromobenzamides with formamide takes place at 80 degrees C, affording 3-substituted quinazolinones directly. Under these conditions other amides that were tested only provided simple coupling products, which can be converted into 2,3-disubstituted quinazolinones via HMDS/ZnCl2 mediated condensative cyclization.