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Pyridines Bearing Poly(ethylene glycol) Chains: Synthesis and Use as Ligands
Author(s) -
Satou Motoi,
Kiyooka Arata,
Tsuji Yasushi,
Fujihara Tetsuaki
Publication year - 2020
Publication title -
asian journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.846
H-Index - 44
eISSN - 2193-5815
pISSN - 2193-5807
DOI - 10.1002/ajoc.202000062
Subject(s) - chemistry , ethylene glycol , peg ratio , pyridine , proton nmr , ring (chemistry) , polymer chemistry , bearing (navigation) , ligand (biochemistry) , ethylene , organic chemistry , combinatorial chemistry , catalysis , biochemistry , receptor , finance , economics , cartography , geography
Abstract A series of pyridine ligands bearing poly(ethylene glycol) (PEG) chains at the para position was synthesized and characterized by NMR and ESI‐HRMS analysis. 1 H NMR analysis showed that pyridines coordinate to Pd(OAc) 2 even when a long PEG chain is attached to the pyridine ring. In the Pd‐catalyzed oxidation of alcohols, the pyridines bearing longer PEG chains were found to be efficient ligands.