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Immobilization of Homogeneous Palladium( II ) Complex Catalysts on Novel Polysiloxanes with Controllable Solubility: Important Implications for the Study of Heterogeneous Catalysis on Silica Surfaces
Author(s) -
Fu YawShyan,
Yu Shuchun J.
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010119)40:2<437::aid-anie437>3.0.co;2-n
Subject(s) - catalysis , solubility , palladium , hydrolysis , chemistry , derivatization , homogeneous , heterogeneous catalysis , selectivity , organic chemistry , homogeneous catalysis , combinatorial chemistry , chemical engineering , polymer chemistry , high performance liquid chromatography , physics , engineering , thermodynamics
Supported catalysts with controllable solubility were obtained by partial hydrolysis and derivatization of (MeO) 3 Si(CH 2 ) 11 N 3 . The soluble Pd complex 1 thus obtained undergoes further hydrolysis to give an insoluble supported complex. Both materials are effective catalysts for the cyclotrimerization of alkynes. Hence, this methodology allows the soluble analogue of a heterogeneous catalyst to be studied by high‐resolution solution NMR spectroscopy. TMS=SiMe 3 , py=2‐pyridyl.