Indian Journal of Chemistry: Sec B- Organic Chemistry including Medicinal Chemistry

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Published by: NISCAIR (CSIR)

Subjects: Chemistry

Indian Journal of Chemistry (Section B) is published by the National Institute of Science Communication and Information Resources (NISCAIR)-CSIR, New Delhi. This journal publishes articles in Organic and Medicinal Chemistry. It includes full length papers, notes and communications and short reviews. The monthly issues covers articles in organic reaction mechanism, theoretical organic chemistry, structure-activity relationships, medicinal chemistry, synthesis of chiral compounds, bio-organic chemistry, enzymes in organic synthesis, reagents in organic synthesis, heterocyclic compounds, phytochemistry (natural products), amino acids, peptides and proteins, spectroscopy in characterization of organic compounds, chemoenzymatic and enantioselective synthesis of organic compounds, synthesis of fullerenes, metal-catalyzed asymmetric reactions, bioactive plant products and combinatorial chemistry.

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Editor,
Dr. P Paravatharajan
email: prema@niscair.res.in


ISSN No. :    0376-4699
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Novel unsymmetrically p-acetoxyphenyl and p-hydroxyphenyl tetrathiafulvalenes: Synthesis, electrochemical properties and electrical conductivity of their charge transfer complexes
Title: Novel unsymmetrically p-acetoxyphenyl and p-hydroxyphenyl tetrathiafulvalenes: Synthesis, electrochemical properties and electrical conductivity of their charge transfer complexes

Authors: Bouchouk, Djamel; Bendjeddou, Amel; Abbaz, Tahar; Gouasmia, Abdelkrim; Aouf, Nour-Eddine; Villemin, Didier

Abstract: Organic molecules such as tetrathiafulvalene (TTF) and its derivatives are important precursors in the design of new conducting, optical and magnetic materials. A new series of unsymmetrically tetrathiafulvalenes have been synthesised. The synthesis of p-acetoxyphenyl tetrathiafulvalenes 5a-d has been carried out by Wittig reaction and their deprotection leads to p-hydroxyphenyl tetrathiafulvalenes 6a-d. The structures have been assigned by 1H NMR spectroscopy and mass spectra. The reducing power of each new precursor has been determined by cyclic voltammetry. Charge transfer complexes of the donors with Tetracyanoquinodimethane (TCNQ) have been prepared and characterized. The electrical conductivity of these materials have been measured and discussed.

Page(s): 884-889

Cooperative catalysis of silica gel with physisorbed water in the synthesis of bis(indolyl)alkanes
Title: Cooperative catalysis of silica gel with physisorbed water in the synthesis of bis(indolyl)alkanes

Authors: Bihani, Manisha; Bora, Pranjal P; Askari, Hassan; Bez, Ghanashyam

Abstract: Silica gel catalyzed synthesis of bis(indolyl)alkane from the reaction of aldehyde and indole has been carried out. The fact that the reaction rate is slow with dried silica gel than that with moist silica gel suggest possible co-operative catalysis by water and silica gel to affect the transformation with excellent yield upon grinding at room temperature. This method for the synthesis of bis(indolyl)alkane has been found to be much better than many silica supported acid catalysts, since it requires no heating and has a much shorter reaction-time.

Page(s): 877-883

Synthesis of push-pull system containing dibenzoheterocycles / triphenylamine tethered benzo[c]thiophenes
Title: Synthesis of push-pull system containing dibenzoheterocycles / triphenylamine tethered benzo[c]thiophenes

Authors: Kumar, Natarajan Senthil; Nandakumar, Meganathan; Mohanakrishnan, Arasambattu K

Abstract: An efficient synthesis of benzo[c]thiophenes based cyano-vinylenes has been achieved via Vilsmeier-Haack formylation followed by condensation with malononitrile/thiophene-2-acetonitrile.

Page(s): 871-876

Efficient and mild synthesis of substituted 2-amino-1,3,4-oxadiazoles mediated by (tosylimino)phenyl-λ3-iodane
Title: Efficient and mild synthesis of substituted 2-amino-1,3,4-oxadiazoles mediated by (tosylimino)phenyl-λ3-iodane

Authors: Prabhu, Girish; Madhu, Chilakapathi; Sureshbabu, Vommina V

Abstract: A simple and convenient one-pot protocol for the synthesis of substituted 2-amino-1,3,4-oxadiazoles mediated by (tosylimino)phenyl-λ3-iodane has been described. Acylthiosemicarbazides prepared from the corresponding acylhydrazides undergo efficient cyclodesulfurization by PhINTs in good yields. The protocol offers efficient and mild conditions for the preparation of a range of 2-amino-1,3,4-oxadiazoles.

Page(s): 865-870

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