Total Syntheses of the Alkaloids Ipalbidinium and Clathryimine B
摘要:
The indolizidinium alkaloid ipalbidinium and the quinolizidinium alkaloid clathryimine B were prepared starting from brominated 2-aminopyridines using two Pd-catalyzed cross-coupling reactions and a Sandmeyer-type diazotation/iodination protocol as the key steps.
Ligand-controlled, Pd/CuH-catalyzed reductive cross-coupling of terminal alkenes and <i>N</i>-heteroaryl bromides
作者:Sanghyup Seo、Donghyeon Kim、Hyunwoo Kim
DOI:10.1039/d1cc04833c
日期:——
The reductive cross-coupling of terminal alkenes and N-heterocyclic bromides has been demonstrated by ligand optimization of Pd and CuH catalysis. The optimized ligands are Briphos, a π-acceptor monodentate phosphorus ligand, for Pd catalysis and DTB-DPPBz, a sterically bulky bidentate phosphorus ligand, for CuH catalysis. These conditions were further applied to the gram-scale production of clathryimine
Total Syntheses of the Alkaloids Ipalbidinium and Clathryimine B
作者:Jochen C. Daab、Franz Bracher
DOI:10.1007/s00706-002-0540-5
日期:2003.3.1
The indolizidinium alkaloid ipalbidinium and the quinolizidinium alkaloid clathryimine B were prepared starting from brominated 2-aminopyridines using two Pd-catalyzed cross-coupling reactions and a Sandmeyer-type diazotation/iodination protocol as the key steps.