Syntheses and catalytic application of hydrido iron( ii ) complexes with [P,S]-chelating ligands in hydrosilylation of aldehydes and ketones

Four hydrido iron( ii ) complexes ( 1–4 ) with [P,S]-chelating ligands were synthesized by the reactions of (2-diphenylphosphanyl)thiophenols, C 6 H 3 (1-SH) (2-PPh 2 ) (4-R 1 ) (6-R 2 ), abbreviated as (P^SH), with Fe(PMe 3 ) 4 . ( 1 : R 1 = R 2 = H; 2 : R 1 = H, R 2 = SiMe 3 ; 3 : R 1 = CH 3 , R 2...

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Published inRSC advances Vol. 5; no. 64; pp. 52000 - 52006
Main Authors Xue, Benjing, Sun, Hongjian, Li, Xiaoyan
Format Journal Article
LanguageEnglish
Published 01.01.2015
Subjects
Catalysis
Catalysts
Diffraction
Hydrosilylation
Ketones
Ligands
Molecular structure
X-rays
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Summary:Four hydrido iron( ii ) complexes ( 1–4 ) with [P,S]-chelating ligands were synthesized by the reactions of (2-diphenylphosphanyl)thiophenols, C 6 H 3 (1-SH) (2-PPh 2 ) (4-R 1 ) (6-R 2 ), abbreviated as (P^SH), with Fe(PMe 3 ) 4 . ( 1 : R 1 = R 2 = H; 2 : R 1 = H, R 2 = SiMe 3 ; 3 : R 1 = CH 3 , R 2 = H; 4 : R 1 = SiMe 3 , R 2 = H). Among them, complexes 2–4 are new and were completely characterized by spectroscopic methods. The molecular structures of complexes 2 , 3 , and 4 were confirmed by X-ray single crystal diffraction. The catalytic properties of hydrido iron( ii ) complexes 1–4 were explored in the hydrosilylation of aldehydes and ketones. They showed a good activity in catalytic hydrosilylation of aldehydes and ketones by using (EtO) 3 SiH as a hydrogen source under mild conditions.
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ISSN:2046-2069
2046-2069
DOI:10.1039/C5RA09330A