Next Article in Journal
Synthesis and Determination of pKa Values of Some New 3,4-Disubstituted-4,5-Dihydro-1H-1,2,4-triazol-5-one Derivatives in Non-aqueous Solvents
Previous Article in Journal
Structure-Acidity-IR Spectra Correlations for p-Substituted N-Phenylsulfonylbenzamides†
Article Menu

Export Article

Open AccessArticle
Molecules 2004, 9(4), 223-231; doi:10.3390/90400223

Synthesis and Some Reactions of 3-Chloro-2-(cyanomethylene)-1,2-dihydroquinoxalines

1
Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Osun State. Nigeria
2
Fachbereich Chemie, Konstanz University, D-78457 Konstanz, Germany
*
Author to whom correspondence should be addressed.
Received: 16 December 2003 / Revised: 11 February 2004 / Accepted: 20 February 2004 / Published: 31 March 2004
View Full-Text   |   Download PDF [195 KB, uploaded 18 June 2014]   |  

Abstract

2,3-Dichloroquinoxaline and some of its derivatives have been reacted with malononitrile and ethyl cyanoacetate to yield a variety of 3-chloro-2-(cyanomethylene)- 1,2-dihydroquinoxaline derivatives. The reaction of 3-chloro-2-(dicyanomethylene)-1,2- dihydroquinoxaline (2e) with pyridine and its methyl derivatives led to the zwitterionic structures 6a-6c. The structures of the newly synthesized compounds were assigned by spectroscopic data and elemental analyses.
Keywords: 2; 3-Dichloroquinoxaline; ethoxycarbonylcyanomethylene- and dicyano- methylene-3-chloro-1; 2-dihydroquinoxalines; betaine structures; spectroscopic data 2; 3-Dichloroquinoxaline; ethoxycarbonylcyanomethylene- and dicyano- methylene-3-chloro-1; 2-dihydroquinoxalines; betaine structures; spectroscopic data
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Obafemi, C.A.; Pfleiderer, W. Synthesis and Some Reactions of 3-Chloro-2-(cyanomethylene)-1,2-dihydroquinoxalines. Molecules 2004, 9, 223-231.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top