The strucutral formula of the given compound K has to be decucted with the help of the given 1 H, 13 C NMR spectral datas. Concept Introduction: The 1 H N M R spectrum of a compound provides some vital information that is required to predict the structure of the compound. The chemical shift values can predict the groups that are present in the molecule. The splitting of signals by the ( N+1 ) rule predicts the number of hydrogens or protons attached to the adjacent carbon in a carbon chain of a compound. With this information, the structure of the compound can be predicted. Chemical shift: The NMR spectrum of any compound is taken with reference to a standard compound called reference compound. Generally, tetramethylsilane (TMS) is taken as the reference compound. The methyl protons of TMS are equivalent and produces only one sharp peak at the rightmost end of the scale. 13 C NMR Spectroscopy: This type of NMR splitting of signals tells us numbers of hydrogens atoms are attached to each carbon. The triangle rule (n+1) C. The chemical shift explains the different hybridization ( s p 3 , s p 2 , s p . , ) of each carbon atoms. Moreover the chemical shift in carbon NMR spectra arises in the same way as in the 1 H NMR spectrum.

Question

P A student claims the right-hand side of the reaction in the drawing area below shows the product of a Claisen condensation. • If the student is correct, complete the reaction by adding the necessary organic reactants to the left-hand side, and by adding any necessary reagents and reaction conditions above and below the arrow. • If the student is incorrect, because it's not possible to obtain this product from a Claisen condensation, check the box under the drawing area instead. those that will minimize any byproducts or competing • Note for advanced students: If you have a choice, use the most efficient reactants and reagents reactions. - ☐ ☐ : ☐ + I Х Click and drag to start drawing a structure.

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Question

Chapter 21, Problem 21.29P

Interpretation Introduction

Interpretation:

The strucutral formula of the given compound K has to be decucted with the help of the given 1H, 13C NMR spectral datas.

Concept Introduction:

The 1H NMR spectrum of a compound provides some vital information that is required to predict the structure of the compound. The chemical shift values can predict the groups that are present in the molecule. The splitting of signals by the (N+1) rule predicts the number of hydrogens or protons attached to the adjacent carbon in a carbon chain of a compound. With this information, the structure of the compound can be predicted.

Chemical shift: The NMR spectrum of any compound is taken with reference to a standard compound called reference compound. Generally, tetramethylsilane (TMS) is taken as the reference compound. The methyl protons of TMS are equivalent and produces only one sharp peak at the rightmost end of the scale.

¹³C NMR Spectroscopy: This type of NMR splitting of signals tells us numbers of hydrogens atoms are attached to each carbon. The triangle rule (n+1) C. The chemical shift explains the different hybridization (sp3, sp2, sp.,) of each carbon atoms. Moreover the chemical shift in carbon NMR spectra arises in the same way as in the ¹H NMR spectrum.

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P A student claims the right-hand side of the reaction in the drawing area below shows the product of a Claisen condensation. • If the student is correct, complete the reaction by adding the necessary organic reactants to the left-hand side, and by adding any necessary reagents and reaction conditions above and below the arrow. • If the student is incorrect, because it's not possible to obtain this product from a Claisen condensation, check the box under the drawing area instead. those that will minimize any byproducts or competing • Note for advanced students: If you have a choice, use the most efficient reactants and reagents reactions. - ☐ ☐ : ☐ + I Х Click and drag to start drawing a structure.

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