Synthesis and Characterization of Bi- and Trinuclear Molybdenum Carbonyl Compounds Obtained by Ligand Exchange Reactions of [Et4N]3[Mo3(CO)9(OMe)3]

2004 ◽  
Vol 23 (6) ◽  
pp. 1352-1358 ◽  
Author(s):  
Rafael A. Adrian ◽  
Marsha M. Yaklin ◽  
Kevin K. Klausmeyer
Keyword(s):  
Ligand Exchange ◽  
Carbonyl Compounds ◽  
Synthesis And Characterization ◽  
Exchange Reactions ◽  
Molybdenum Carbonyl

Synthesis and Characterization of Strontium Bis(N-isopropylanilide) and Comparison with the Lighter Magnesium and Calcium Congeners

2013 ◽  
Vol 68 (5-6) ◽  
pp. 518-532 ◽  
Author(s):  
Claas Loh ◽  
Carsten Glock ◽  
Steffen Ziemann ◽  
Helmar Görls ◽  
Sven Krieck ◽  
...  
Keyword(s):  
Ligand Exchange ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Synthesis And Characterization ◽  
Alkaline Earth Metal ◽  
Similar Reaction ◽  
Exchange Reactions ◽  
Metathesis Reaction ◽  
Short Contacts

The metathesis reaction of strontium diiodide [(thf)5SrI2] with K[N(Ph)iPr] in THF yields [(thf)4Sr{N(Ph)iPr}2] (1). Ligand exchange reactions with 1,2-dimethoxyethane (DME), tetramethylethylenediamine (TMEDA), and pentamethyldiethylenetriamine (PMDETA) allow the isolation of the corresponding adducts [(dme)2Sr{N(Ph)iPr}2] (2), [(tmeda)(thf)Sr{N(Ph)iPr}2] (3) and [(pmdeta)Sr{N(Ph)iPr}2] (4), respectively. Magnesiation of N-isopropylaniline with dibutylmagnesium in THF leads to the formation of [(thf)2Mg{N(Ph)iPr}2] (5). A similar reaction in TMEDA gives nearly insoluble crystalline [(tmeda)Mg{N(Ph)iPr}2] (7), whereas the mother liquor contains heteroleptic [(tmeda)(nBu)Mg{N(Ph)iPr}] (6). Magnesiation of N-isopropylaniline in 2,2,5,5-tetramethyltetrahydrofuran (Me4thf) yields [(Me4thf)Mg{N(Ph)iPr}2] (8) with a threecoordinate metal center. In hydrocarbons this complex loses the bulky ether base, and the solvent-free dimer [Mg{N(Ph)iPr}2]2 (9) can be isolated. Reaction of this complex with 1,2- dimethoxyethane or metalation of N-isopropylaniline with dibutylmagnesium in DME yield the dme adduct, [(dme)Mg{N(Ph)iPr}2] (10). The crystal structures show that the nitrogen atoms of the magnesium-bound N-isopropylanilide ions are in planar environments whereas strontium-bound N-isopropylanilide ions show rather short contacts between the alkaline earth metal and the ipsocarbon atoms of the phenyl groups leading to a pyramidalization of the coordination of the nitrogen atoms

Cu-Catalyzed Borylative and Silylative Transformations of Allenes: Use of β-Functionalized Allyl Copper Intermediates in Organic Synthesis

Synthesis ◽  
2018 ◽  
Vol 50 (09) ◽  
pp. 1737-1749 ◽  
Author(s):  
Tetsuaki Fujihara ◽  
Yasushi Tsuji
Keyword(s):  
Organic Synthesis ◽  
Carbonyl Compounds ◽  
Synthesis And Characterization ◽  
Future Outlook

Herein, copper-catalyzed borylative and silylative transformations of allenes using borylcopper or silylcopper as the active catalytic species are described. First, the synthesis and characterization of borylcopper and silylcopper complexes are briefly introduced. Next, the borylative transformations of allenes are summarized including hydro­boration, carboboration, and borylative allylation of carbonyl compounds. We next deal with the silylative transformations of allenes such as hydrosilylation, carbosilylation, and silylative allylation of carbonyl compounds.1 Introduction2 Synthesis of Borylcopper and Silylcopper Complexes3 Borylative Transformations4 Silylative Transformations5 Conclusions and Future Outlook

Design, Synthesis and Characterization of 2,4-Dimethylphenyl Hydrazine based Chemosensors

2020 ◽  
Vol 4 (1) ◽  
pp. 46-58
Author(s):  
Saema Salim ◽  
Qamar Ali
Keyword(s):  
Carbonyl Compounds ◽  
Biological Properties ◽  
Synthesis And Characterization ◽  
Design Synthesis ◽  
Anti Inflammatory ◽  
Aromatic Carbonyl Compounds

Hydrazones are a unique division of compounds found in various syntheses. They have an important role in synthetic chemistrydue to their different biological properties, such as antifungal, anticonvulsant, antibacterial, antimalarial, anti-inflammatory and anti-TB properties. This paper reports the syntheses of a series of 3 hydrazones based on the condensation of 2,4-dimethylphenyl hydrazine HCl with different aromatic carbonyl compounds. The structures of the synthesized compounds were confirmed by EIMS. These compounds can act as ideal candidates in chemosensor chemistry.

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