Regioselective palladium-catalyzed tandem .alpha.-arylation/isomerization of cyclic enamides
作者:Kristina Nilsson、Anders Hallberg
DOI:10.1021/jo00295a041
日期:1990.4
Preparation of N-Formyl- and N-carbomethoxy-2,3-dihydropyrroles by palladium-catalyzed isomerization of the corresponding N-acyl-2,5-dihydropyrrole
作者:Clas Sonesson、Anders Hallberg
DOI:10.1016/0040-4039(95)00770-d
日期:1995.6
N-Formyl- and N-carbomethoxy-2,3-dihydropyrrole were prepared by palladium acetate/dppp catalyzed isomerization of N-formyl- and N-carbomethoxy-2,5-dihydropyrrole, respectively, in the presence of N,N-diisopropylethylamine and trifluoroacetic acid.
Asymmetric Heck cyclization route to indolizidine and azaazulene alkaloids: synthesis of (+)-5-epiindolizidine 167B and indolizidine 223AB
作者:Kurt Kiewel、Mathew Tallant、Gary A Sulikowski
DOI:10.1016/s0040-4039(01)01361-2
日期:2001.9
Asymmetric intramolecular Heck cyclization of endocyclic enamides occurs at room temperature to give indoloizidine and azaazulene ring systems in up to 86% enantiomeric excess. A synthesis of (+)-epiindolizidine 167B and formal synthesis of 5E,9Z-indolizidine 223AB is described. (C) 2001 Elsevier Science Ltd. All rights reserved.
EBERSON, L.;MALMBERG, M.;NYBERG, K., ACTA CHEM. SCAND., 1984, 38, N 5, 391-396