Indian Journal of Chemistry

Sect. A: Inorganic, Bio-inorganic, Physical, Theoretical & Analytical

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CODEN: ICACEC; ISSN: 0376-4710 (Print), 0975-0975 (Online)

 

 

 

VOLUME 55A

NUMBER 8

AUGUST 2016

 

CONTENTS

 

 

919

 

Synthesis of quinolines from glycerol over tungstic acid functionalized mesoporous KIT-6 catalyst in aqueous medium

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V Udayakumar & A Pandurangan*

 

 

 

With mesoporous tungstic acid functionalized KIT-6 nanoparticles as catalyst in the Skraup synthesis of glycerol, aniline and water as solvent, the target quinoline and its derivatives are obtained in up to 89% yield with complete conversion of glycerol (100%) under the reaction conditions of 200 oC for 3 h. The para substituted anilines with electron-rich groups afford higher yields as compared to those with electron-deficient groups.

 

 

 

 

 

929

 

Ruthenium carbonyl complex bearing thioether containing Schiff base ligand: Structure, electrochemistry and catalytic activity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sujan Biswas, Puspendu Roy, Deblina Sarkar & Tapan Kumar Mondal*

 

 

 

Ruthenium(II) carbonyl complex, cis-(CO)-trans-(Cl)-[Ru(CO)2(L)Cl2] (L = 2-(methylthio)-N-((pyridine-2-yl)methylene)-benzenamine), has been synthesized. The pseudo-octahedral geometry of the complex has been confirmed by single crystal
X-ray diffraction data. Cyclic voltammetry exhibits irreversible Ru(II)/Ru(III) oxidation along with irreversible ligand based reduction; the redox properties are supported by
DFT calculations. The electronic spectrum of the complex has been interpreted by spin allowed electronic transitions computed by TDDFT method and is in good agreement with the experimental spectrum. Quantum yield calculations and lifetime measurement emission show quantum yield of the complex to be 0.027, while the emission lifetime of the complex is found to be 3.93 ns. The ruthenium(II) complex efficiently catalyzes the oxidation of alcohols (77-84%) in presence of N-methylmorpholine-N-oxide.

 

 

 

 

 

 

938

 

Structure and reactivity of di-n-butyltin(IV) derivative of chlordiazepoxide based on electronic structure calculations

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sandeep Pokharia*, Rachana Joshi, Mamta Pokharia, Swatantra Kumar Yadav & Hirdyesh Mishra

 

 

 

A DFT study on n-Bu2SnL2 (L = monoanion of chlordiazepoxide) calculates a distorted tetrahedral geometry around the central Sn atom, and different degrees of interaction for the two chlordiazepoxide units with the di-n-butyltin(IV) moiety.

 



 

Notes

 

950

 

Bifunctional organocatalysts for the synthesis of jasminaldehyde and their derivatives

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Venkata Subba Rao Ganga, Sayed H R Abdi*, Rukhsana I Kureshy, Noor-ul H Khan &
Hari C Bajaj
*

 

 

 

Jasminaldehyde is synthesized by cross-aldol condensation
of benzaldehyde with 1-heptanal under solvent free condition
and in presence of L-proline in combination with benzoic
acid. Under the optimized reaction conditions, jasminaldehyde
is formed with 96% selectivity in one hour with the desired
arylaldehyde:1-alkanaldehyde ratio as low as 2:1 under controlled addition of 1-alkanaldehyde.