Please use this identifier to cite or link to this item: https://doi.org/10.1139/cjc-76-5-522
Title: Bisthiosemicarbazones of 2,4-pentanedione are pyrazolines
Authors: Hunter, D.H.
McRoberts, C.
Vittal, J.J. 
Keywords: Bisthiosemicarbazone
Ethylenediamine
Pentanedione
Pyrazoline
Issue Date: May-1998
Citation: Hunter, D.H., McRoberts, C., Vittal, J.J. (1998-05). Bisthiosemicarbazones of 2,4-pentanedione are pyrazolines. Canadian Journal of Chemistry 76 (5) : 522-524. ScholarBank@NUS Repository. https://doi.org/10.1139/cjc-76-5-522
Abstract: Attempts to prepare 2,4-bisthiosemicarbamoylpentadiones 1 via literature precedent from 2,4-pentanedione and three different thiosemicarbazides resulted instead in the formation of cyclic pyrazolines 5. The preparation was attempted with thiosemicarbazide, 4-methylthiosemicarbazide, and 4- ethylthiosemicarbazide, respectively. A single-crystal X-ray structure study of the product from 4-methylthiosemicarbazide confirmed the pyrazoline structure. This observation serves to correct earlier misassignments of structure.
Source Title: Canadian Journal of Chemistry
URI: http://scholarbank.nus.edu.sg/handle/10635/75676
ISSN: 00084042
DOI: 10.1139/cjc-76-5-522
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