ISSN:
0749-1581
Keywords:
13C NMR
;
Chemical shifts
;
J(CP)
;
N-Phenylpyrazoles
;
Iminophosphoranes
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
13C chemical shifts and 13C-31P coupling constants are reported for nineteen pyrazoles bearing an N=PPh3 substituent at position 5. The three heterocyclic carbons are coupled with the phosphorus (2J, 3J and 4J). These couplings are very sensitive to the nature of the subtituent at position 4 [CHO, CH=CHCOMe, CH(CH2NO2)2, CH=NR, CH2NHR and CH2N(COR)Ar].
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260290519
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