期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 78, 期 3, 页码 1075-1079出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2010.12.053
关键词
Chalcones; 1-Acetyl or formy1-2-pyrazolines; Fluorescence
类别
资金
- UGC New [F.4-3/2006 (BSR)/11-84/2008 (BSR)]
A series of 2-pyrazolines have been synthesized from alpha, beta unsaturated ketones and hydrazine hydrate with acetic/formic acid in ethanol/DMSO. The structures of 2-pyrazolines have been established by spectroscopic techniques i.e. UV, IR, (1)H NMR, (13)C NMR and micro element analysis. Fluorescence spectra were recorded in the solution at fixed concentration and same excitation wavelength at 290 nm. The absorption band positions of all the compounds broadly lie between 280 and 336 nm and fluorescence band positions in the range between 300 and 370 nm, the near ultraviolet region. (C) 2010 Elsevier B.V. All rights reserved.
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