Synthesis and multinuclear NMR study of (E)-s-trans -1-acetyl-5-aryl-3-styryl-2-pyrazolines
1999
The reaction of triarylideneacetylacetones with hydrazine hydrate in acetic acid affords an excellent yield of (E)-s-trans-1-acetyl-5-aryl-3-styryl-2-pyrazolines via decinnamoylation. The structures of these compounds were elucidated using 1H, 13C and two-dimensional NMR techniques such as H,H-COSY, C,H-COSY, NOESY and HMBC. 15N NMR data for these compounds were also obtained and the results are discussed. Copyright © 1999 John Wiley & Sons, Ltd.
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