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Synthesis, Characterization, and Catalytic Applications of Palladacyclic Complexes Bearing C,N,S‐Donor Ligands
Author(s) -
Chen MingTsz,
Huang ChiAn,
Chen ChiTien
Publication year - 2006
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200600601
Subject(s) - chemistry , palladium , halide , methanol , aryl , catalysis , crystal structure , ligand (biochemistry) , medicinal chemistry , stereochemistry , organic chemistry , receptor , biochemistry , alkyl
The preparations of novel tridentate C,N,S‐donor ligand precursors, PhN=C(CMe 2 )(NPh)C=N(CH 2 ) 2 SR [R = CMe 3 ( 2 ); R = Ph ( 3 )] are described. Treatment of 2 and 3 with 1 equiv. of Pd(OAc) 2 affords the orthometallated palladium(II) complexes [PhN=C(CMe 2 )(N‐η 1 ‐Ph)C=N(CH 2 ) 2 SR]Pd(OAc) [R = CMe 3 ( 4 ); R = Ph ( 5 )]. Reaction of 4 and 5 with an excess of LiCl in methanol affords the orthometallated palladium(II) complexes [PhN=C(CMe 2 )(N‐η 1 ‐Ph)C=N(CH 2 ) 2 SR]PdCl [R = CMe 3 ( 6 ); R = Ph ( 7 )]. Crystal structures are reported for compounds 3 and 4 . The application of these novel palladacyclic complexes as catalyses for the Suzuki and Heck reactions with aryl halide substrates was examined. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)