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Polystyrene‐supported palladium(II) ethylenediamine complex: A highly active and recyclable catalyst for the synthesis of 2‐benzylimidazo[2,1‐ b ]pyridines through heteroannulation of acetylenic compounds
Author(s) -
Bakherad Mohammad,
Bahramian Bahram,
NasrIsfahani Hossein,
Keivanloo Ali,
Doostmohammadi Nesa
Publication year - 2009
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.16
Subject(s) - chemistry , catalysis , palladium , iodide , ethylenediamine , aryl , pyridinium , phenylmagnesium bromide , sonogashira coupling , bromide , polystyrene , polymer chemistry , organic chemistry , heterogeneous catalysis , combinatorial chemistry , polymer , alkyl , reagent
The polymer‐supported palladium(II) ethylenediamine [PS‐en‐Pd(II)] complex is a highly active catalyst for the heterocyclization that takes place during the Sonogashira reaction between an aryl iodide and 2‐amino‐1‐(2‐propynyl)pyridinium bromide. This heterogeneous palladium catalyst can readily be recovered from the reaction medium by simple filtration and reused without a significant loss in its activity. J. Heterocyclic Chem., (2009).