Concept explainers
(a)
Interpretation:
Each of the following compounds exists as a fluxional molecule that is interconverted into one or more identical forms by the sigmatropic process indicated. One structure in each case that demonstrates the process involved is to be drawn. Each process is an allowed pericyclic reaction – the statement is to be verified.
Concept introduction:
When a molecule undergoes a dynamic molecular motion involving the interchange of two or more groups which are chemically and magnetically different, then the molecule is said to have fluxionality nature. In this case, the signals corresponding to interchanged two or more groups will be identical, if the rate of exchange of the groups occurs very quickly. The fluxionality in organic molecules can be easily followed by multinuclear NMR spectroscopy.
(b)
Interpretation:
Each of the following compounds exists as a fluxional molecule that is interconverted into one or more identical forms by the sigmatropic process indicated. One structure in each case that demonstrates the process involved is to be drawn. Each process is an allowed pericyclic reaction – the statement is to be verified.
Concept introduction:
When a molecule undergoes a dynamic molecular motion involving the interchange of two or more groups which are chemically and magnetically different, then the molecule is said to have fluxionality nature. In this case, the signals corresponding to interchanged two or more groups will be identical, if the rate of exchange of the groups occurs very quickly. The fluxionality in organic molecules can be easily followed by multinuclear NMR spectroscopy.
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Chapter 28 Solutions
Organic Chemistry Study Guide and Solutions
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- Provide the proper IUPAC name only for the following compound. Dashes, commas, and spaces must be used correctly, but do not use italics in Canvas.arrow_forwardThe kinetics of a gas phase reaction of the form A → Products results in a rate constant of 0.00781 M/min. For this reaction, the initial concentration of A is 0.501 M. How many minutes will it take for the concentration of A to reach 0.144 Marrow_forwardWhat is the rate for the second order reaction A → Products when [A] = 0.256 M? (k = 0.761 M⁻¹s⁻¹)arrow_forward
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