ISSN:
0749-1581
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The 13C NMR data of 42 ring-halogenated oxiranes containing fluorine, chlorine, bromine and, in one case, iodine as substituents are reported and discussed with respect to the influence of the halogen and of other substituents on the chemical shifts of the ring carbon atoms. For monocyclic mono- and dichlorooxiranes increments have been determined which allow the calculation of the chemical shifts of the ring carbon atoms. Comparison of the 13C NMR data of substituted 1,2-dihaloethylenes with those of the corresponding epoxides showed that the signals of the ring carbon atoms of the halogenated oxiranes always appeared at considerably higher field than those of the sp2 hybridized vinylic carbons in the respective precursors.
Additional Material:
8 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260230708
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