Immobilization of Homogeneous Palladium(II) Complex Catalysts on Novel Polysiloxanes with Controllable Solubility: Important Implications for the Study of Heterogeneous Catalysis on Silica Surfaces

Yaw-Shyan Fu; Shuchun J Yu

doi:10.1002/1521-3773(20010119)40:2<437::AID-ANIE437>3.0.CO;2-N

Immobilization of Homogeneous Palladium(II) Complex Catalysts on Novel Polysiloxanes with Controllable Solubility: Important Implications for the Study of Heterogeneous Catalysis on Silica Surfaces

Angew Chem Int Ed Engl. 2001 Jan 19;40(2):437-440. doi: 10.1002/1521-3773(20010119)40:2<437::AID-ANIE437>3.0.CO;2-N.

Authors

Yaw-Shyan Fu¹, Shuchun J Yu¹

Affiliation

¹ Department of Chemistry National Chung Cheng University Chia-Yi, 621 (Taiwan, R.O.C.) Fax: (+886) 5-2721040.

PMID: 29712394
DOI: 10.1002/1521-3773(20010119)40:2<437::AID-ANIE437>3.0.CO;2-N

Abstract

Supported catalysts with controllable solubility were obtained by partial hydrolysis and derivatization of (MeO)₃ Si(CH₂ )₁₁ N₃ . 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=SiMe₃ , py=2-pyridyl.

Keywords: cyclization; heterogeneous catalysis; homogeneous catalysis; immobilization; palladium.