Intramolecular addition of acyl radicals to α-substituted vinylogous carbonates: demonstrating the effect of ring size on acyclic stereocontrolElectronic supplementary information (ESI) available: spectral data (IR, 1H and 13C NMR) and high resolution MS for 1/2a-c, 7–10. See http://www.rsc.org/suppdata/cc/b1/b106766b/

2001 ◽  
pp. 2504-2505 ◽  
Author(s):  
P. Andrew Evans ◽  
Sushil Raina ◽  
Khalid Ahsan
Keyword(s):  
High Resolution ◽  
Spectral Data ◽  
13C Nmr ◽  
Supplementary Information ◽  
Ring Size ◽  
1H And 13C Nmr ◽  
Acyl Radicals

8-Acyl-7-phenylbicyclo[2.2.2]-2,6-diones by rearrangement of 3-acyloxy-5-(2-phenylethenyl)-2-cyclohexen-1-ones. 1H and 13C NMR spectral evidence of their structure

1990 ◽  
Vol 55 (5) ◽  
pp. 1208-1215 ◽  
Author(s):  
Pavel Hrnčiar ◽  
Tibor Liptay ◽  
Ján Šraga
Keyword(s):  
Double Bond ◽  
Spectral Data ◽  
13C Nmr ◽  
1H And 13C Nmr ◽  
Spectral Evidence ◽  
C Nmr

3-Acyloxy-5-(2-phenylethenyl)-2-cyclohexen-1-ones II were prepared by O-acylation of 5-(2-phenylethenyl)-1,3-cycloxanedione (I). Treatment of II with AlCl3 resulted in rearrangement of the acyl group to the double bond of the phenylethenyl grouping followed by cyclization to 8-acyl-7-phenylbicyclo[2.2.2]octane-2,6-diones III. Their structure was evidenced by analysis of the 1H and 13C NMR spectral data.

Engineered biosynthesis of novel spinosyns bearing altered deoxyhexose substituentsElectronic supplementary information (ESI) available: 1H and 13C NMR data for compounds 5–8. See http://www.rsc.org/suppdata/cc/b2/b200536k/

2002 ◽  
pp. 618-619 ◽  
Author(s):  
Sabine Gaisser ◽  
Christine J. Martin ◽  
Barrie Wilkinson ◽  
Rose M. Sheridan ◽  
Rachel E. Lill ◽  
...  
Keyword(s):  
13C Nmr ◽  
Supplementary Information ◽  
1H And 13C Nmr ◽  
Nmr Data

SYNTHESIS AND CHARACTERIZATION OF HETEROCYCLIC CHALCONES CONTAINING HALOGENATED THIOPHENES

2015 ◽  
Vol 77 (3) ◽  
Author(s):  
Helmi Mohammed Al-Maqtari ◽  
Joazaizulfazli Jamalis ◽  
Hasnah Mohd Sirat
Keyword(s):  
Sodium Hydroxide ◽  
Spectral Data ◽  
13C Nmr ◽  
Basic Medium ◽  
Synthesis And Characterization ◽  
Schmidt Reaction ◽  
Synthetic Compounds ◽  
1H And 13C Nmr ◽  
Heterocyclic Aldehydes

Heterocyclic chalcones containing halogenated thiophenes were synthesized. The first step was to synthesize 3-acetyl-2,5-dichlorothiophene and 2-acetyl-5-chlorothiophene as heterocyclic ketones by using Friedel-Crafts acylation. The ketones were then used to synthesize thiophene chalcones through Claisen-Schmidt reaction with the respective heterocyclic aldehydes such as 5-bromothiophene-2-carbaldehyde, 3-methyl-2-thiophene carboxaldehyde and 2-thiophene carboxaldehyde with 3-acetyl-2,5-dichlorothiophene or 2-acetyl-5-chlorothiophene in presence of basic medium, sodium hydroxide to form the corresponding chalcones. Structures of the synthetic compounds were confirmed by IR, MS, 1H and 13C NMR spectral data.

scholarly journals Reliability of 1H and 13C NMR spectral data - Chemical shift signal intensity.

Kobunshi ◽  
1987 ◽  
Vol 36 (6) ◽  
pp. 438-439
Author(s):  
Koichi Hatada
Keyword(s):  
Chemical Shift ◽  
Spectral Data ◽  
13C Nmr ◽  
Signal Intensity ◽  
1H And 13C Nmr

scholarly journals Flavonoids from flowers of Cephalaria pastricenis and their antiradical activity

2004 ◽  
Vol 69 (11) ◽  
pp. 883-886 ◽  
Author(s):  
Dejan Godjevac ◽  
Vlatka Vajs ◽  
Nebojsa Menkovic ◽  
Vele Tesevic ◽  
Pedja Janackovic ◽  
...  
Keyword(s):  
Acid Hydrolysis ◽  
Spectral Data ◽  
13C Nmr ◽  
Antiradical Activity ◽  
Flavonoid Glycosides ◽  
Dpph Assay ◽  
Endemic Plant ◽  
1H And 13C Nmr ◽  
Vis Spectroscopy ◽  
Endemic Plant Species

Two flavonoid glycosides 1 and 2 having the luteolin structure were isolated from flowers of the endemic plant species Cephalaria pastricensis. They were identified by 1H and 13C NMR, as well as UV/Vis spectroscopy. The structures of 1 and 2 were also confirmed by the spectral data of aglycones and TLC of the sugars obtained after acid hydrolysis. Flavones 1 and 2 showed significant antiradical activity in the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay.

High-resolution 1H and 13C NMR of solid 2-Aminobenzoic acid

1987 ◽  
Vol 48 (9) ◽  
pp. 813-818 ◽  
Author(s):  
Robin K. Harris ◽  
Peter Jackson
Keyword(s):  
High Resolution ◽  
13C Nmr ◽  
Aminobenzoic Acid ◽  
1H And 13C Nmr
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