Regioselective Synthesis of Bis2-halo-3-pyridyl Dichalcogenides E = S, Se and Te: Directed Ortho-Lithiation of 2-halopyridinesReport as inadecuate




Regioselective Synthesis of Bis2-halo-3-pyridyl Dichalcogenides E = S, Se and Te: Directed Ortho-Lithiation of 2-halopyridines - Download this document for free, or read online. Document in PDF available to download.

Bioinorganic Chemistry and Applications - Volume 2007 2007, Article ID 69263, 9 pages

Research Article

Department of Chemistry, Panjab University, Chandigarh 160 014, India

Department of Chemistry, Chaudhary Devi Lal University, Sirsa 125055, Haryana, India

Department of Chemistry and Biochemistry, Ludwig-Maximilians University, Munich 81377, Germany

Received 20 July 2006; Revised 26 December 2006; Accepted 16 January 2007

Academic Editor: Govindasamy Mugesh

Copyright © 2007 K. K. Bhasin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A novel method for the preparation of hitherto unknown symmetrical bis2-halo-3-pyridyl dichalcogenides E = S, Se and Te by the oxidation of intermediate 2-halo-3-pyridyl chalcogenolate, prepared by lithiation of 2-halo pyridines using lithium diisopropylamine is being reported. All the newly synthesized compounds have been characterized through elemental analysis employing various spectroscopic techniques, namely, NMR H1, C13, S77e, infrared, mass spectrometry, and X-ray crystal structures in representative cases.





Author: K. K. Bhasin, Neelam Singh, Shivani Doomra, Ekta Arora, Ganga Ram, Sukhjinder Singh, Yogesh Nagpal, S. K. Mehta, and T. M. Klapot

Source: https://www.hindawi.com/



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