Pyrenoxy-Based NCN-Pincer Palladium(II) Molecular Tweezers: Synthesis, Properties in Solution and Catalysis
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چکیده
منابع مشابه
Mono(NCN-pincer palladium)-metalloporphyrin catalysts: evidence for supramolecular bimetallic catalysis.
The synthesis and catalytic properties of ditopic mono-pincer-mono-porphyrin complexes were investigated. The statistical Adler condensation reaction of 3,5-bis(methoxymethyl)-4-bromo-benzaldehyde, p-tolylaldehyde, and pyrrole, furnished an AB(3)-type tetraphenylporphyrin, containing three meso-p-tolyl groups and one meso-3,5-bis(methoxymethyl)-4-bromophenyl group. This material was converted i...
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1-(3-(Pyridin-2-yl)phenyl)methanamine derivatives have been synthesized and underwent C–H bond activation to afford unsymmetrical NCN’ pincer palladacycles, which were characterised in the solid state. 2-Pyridinyl-phenol and -benzyl alcohols were then used as precursors to unsymmetrical PCN pincer palladacycles. Catalytic applications, where the palladacycle remains in the Pd(II) state, have be...
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In the present study, some new bis-imidazole derivatives have been prepared through four-components condensation of 2,6-bis (4-aminophenyl)-4-p-tolylpyridine, benzaldehyde derivatives, benzil and ammonium acetate in presence of acetic acid. The present methodology offers several advantages such as good yields, simple procedure, milder conditions and the possibility of introducing a v...
متن کاملA new NCN pincer ruthenium complex and its catalytic activity for enantioselective hydrogenation of ketones.
New bis(oxazolinyl)phenyl-ruthenium(II) complexes, which were synthesized by C-H bond activation with RuCl(3).3H(2)O in zinc powder and 1,5-cyclooctadine followed by ligand exchange reaction with sodium acetylacetonate or acetylacetone, exhibited enantioselective hydrogenation of ketones in up to 90% ee.
متن کاملDirect measurements of the high temperature rate constants of the reactions NCN + O, NCN + NCN, and NCN + M.
The rate constant of the reaction NCN + O has been directly measured for the first time. According to the revised Fenimore mechanism, which is initiated by the NCN forming reaction CH + N(2)→ NCN + H, this reaction plays a key role for prompt NO(x) formation in flames. NCN radicals and O atoms have been quantitatively generated by the pyrolysis of NCN(3) and N(2)O, respectively. NCN concentrati...
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ژورنال
عنوان ژورنال: European Journal of Organic Chemistry
سال: 2003
ISSN: 1434-193X,1099-0690
DOI: 10.1002/ejoc.200210601