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Efficient and green catalytic system incorporating new benzimidazolium salts for the Sonogashira cross‐coupling reaction
Author(s) -
Yavuz Kemal,
Küçükbay Hasan
Publication year - 2018
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3897
Subject(s) - sonogashira coupling , phenylacetylene , chemistry , benzimidazole , catalysis , ethylene glycol , aryl , coupling reaction , halide , triphenylphosphine , carbon 13 nmr , organic chemistry , polymer chemistry , combinatorial chemistry , palladium , alkyl
A number of novel benzimidazole salts were synthesized and their structures were determined using 1 H NMR, 13 C NMR and infrared spectroscopic techniques and elemental analysis. A catalyst system consisting of Pd(OAc) 2 and copper nanoparticles in the presence of Cs 2 CO 3 and incorporating the novel benzimidazole salts in poly(ethylene glycol) solvent significantly improved the yields of Sonogashira reactions between aryl halides and phenylacetylene under microwave irradiation in 10 min.