class problem set1

Obtain the structure of organic compound that is consistent with the spectroscopic data (see also spectra) given below . Show all NMR data on each and every group in the structure. [full characterization needed ]

Basic instrumental chemistry

Organic chemistry

Determine the following for the compound C6H15N a.) degrees of unsaturation  b.) Assign the principal IR absorption bands above 1500 c.) draw the structure of the compound  d.) label the protons on your structure with letters and assign them to peaks on the NMR spectrum.

Please explain neatly and clearly!!!

The 1HNMR signals the alkene protons of three ethylene derivatives with different substitution patterns are shown below.  Considering that each of the derivatives contains AT MOST two substituents (X and/or Y) and at least two protons. A) Propose the possible substitution patterns for each of the derivatives based on the observed splitting patterns. Justify your proposals B) How might one differentiate between the three possible isomers of derivative 3 in the question above using 1H NMR spectroscopy? Explain in a sentence – no calculation is needed. C) Give TWO methods that can be used to differentiate between the three possible isomers of derivative 2 in the question above using 1H NMR spectroscopy? Explain in a sentence – no calculation is needed.

The following H-NMR spectrum (showing all available signals) is for one of the possible products listed below. This product was obtained from oxidizing one of the alcohols listed below (as possible reactants) using either dichromate (Na2Cr2O7/H2SO4) or DMP. Determine the product, reactant and oxidizing agent following the analysis below. Based on the given H-NMR spectrum, and since there is signals is and the total number of H-NMR the oxidation product must be ÷ Therefore, the oxidizing agent and the reactant must be PPM Possible Reactants OH A Possible Products O I V ОН B ОН VI II ОН C ОН OH III VII OH D OH E IV VIII

Need help with both questions, please!

7. Suggest chemical structures for compounds A, B, and C, and answer the subsequent spectroscopy question Et 1. NaH Na,Cr207 LIAIHA (2 equiv) A в H2SO4, H20 Ét then H2O/N2OH 2. CH3I (2 equiv) (a) Provide structures for compounds A, B, and C. [Hint: Compound C has the formula C10H1402, M* = 166 ] (b) Compound C has the following 'H NMR chemical shifts: 8 3.36 (s, 6H), 4.43 (s, 4H), 7.31 (s, 4H). Label the chemically-inequivalent protons as HA, HB, Hc, etc. and clearly assign the chemical shifts. (c) Compound C has the following13C NMR chemical shifts: 8 58, 75, 128, 138. Label the chemically-inequivalent carbons as C1, C2, C3, and C4 and assign the chemical shifts (d) How could you use IR spectroscopy to confirm that compound B has reacted to form compound C? (e) Sketch the isotopic cluster for the mass spectrum of C. (e.g., What would the mass spectrum look like?)

1B. Can 1H NMR spectroscopy be used to differentiate between the two compounds? Briefly explain why or why not. Predict the 1H NMR spectrum for each compound (include integration, multiplicity, and approximate chemical shift). Put it in data table format.

5. Please indicate how you could distinguish the following molecules using all four techniques we have learned so far (MS, IR, 'H and 13C NMR). Note that in some cases a given technique will provide no means to distinguish the compounds. Please write about all four techniques in your answer. Br Br vs. çO,H çO,Me vs. čO,Me CO2H Br Он Он vs.

III) Can 1H NMR spectroscopy be used to differentiate between the two compounds? Briefly explain why or why not. Predict the 1H NMR spectrum for each compound (include integration, multiplicity, and approximate chemical shift). For each set, be sure that you put them in a data table format!

Shown below are three isomers of a disubstituted benzene ring. The 1H NMR and 13C NMR spectra are also shown below for ONE of these isomers. Identify which isomer is producing these spectra?  Hint: Consider the number of chemically equivalent hydrogen and carbon environments in each structure and the number of signals expected for each. In practise, overlapping of signals may occur if two or more hydrogen environments (or carbon environments for 13C NMR) are very similar to one another. This is often seen for aromatic signals in particular.

5. Please indicate how you could distinguish the following molecules using all four techniques we have learned so far (MS, IR, 'H and 13C NMR). Note that in some cases a given technique will provide no means to distinguish the compounds. Please write about all four techniques in your answer. Br Br vs. Br CO,H çO2Me vs. čO,Me CO2H Br OH OH vs.

A. Below is a “Name Reaction” - Clemensen reduction. Describe how the IR spectrum could be used to tell if the reactions had been successful. Provide approximate wave numbers and the corresponding functional groups for the key absorption bands and/or peaks in IR.  You might want to describe from two aspects: which peak(s) of what functional group(s) should appear in the IR of the product (that is different from the reactant); which peak(s) of what functional group(s) should disappear in the IR of the product (that is present in the reactant B. For the Clemensen reduction (same reaction), describe how the 1H NMR spectrum could be used to tell if the reactions had been successful. Provide approximate chemical shifts and the integral and the “splitting” of the “unique” in the NMR spectrum. You might want to describe from two aspects: which peak(s) should have a change in chemical shift(s); which peak(s) should have a change in integral; which has a splitting change; which peak(s) will be…

please help me solve these both questions by explaining the pieces that forms at each peak and the final structure for my Organic Chemistry 1 class. Thanks in advance! the solution is provided i just need to understand how to reach there please.

Given all the following information, please fill out everything i didn't I am trying to use this to study and I am very confused, everything I have filled out is correct I confirmed with my professor, but I am so confused on the rest of it

The product from the following reaction shows infrared absorptions at 3050 cm', 2930 cm', 1600 cm', 1570 cm', 1490 cm', 1450 cm", and 1150 cm', and a broad absorption around 3550 cm structure of the product. Use this spectroscopic data and the appended infrared correlation table to make clear assignments of all the listed absorptions to explain your reasoning. Draw the a.) LİAIH4 OCH3 b.) dil. aq. HCI infrared assignments: absorption (cm') assignment 3550 3050 2930 1600 1570 1490 1450 1150

Need a help a little with HNMR question please! Thank you Part 3B Set 1. Can 1H NMR spectroscopy be used to differentiate between the two compounds? Briefly explain why or why not. Predict the 1H NMR spectrum for each compound (include integration, multiplicity, and approximate chemical shift). Either draw the actual spectrum or put in a data table format.

Please explain how to figure out, esp. COSY

help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working!

6.a. Given the ¹H NMR spectrum provided, give the structure of the molecule. The molecular formula is C6H3N306. Hint: this is a symmetric molecule. 6.b. Explain why the singlet peak (the only peak in the spectrum) is significantly downfield shifted. Where would it normally be? Also explain why there is just a singlet. 9 3H 8 7 Chemical Shift (ppm)

Complete the spectroscopy data tables for a compound with molecular formula C3H5BrO2. Determine the structure of the compound. Any labile protons, if they exist, will not be present in this particular 1H NMR spectrum.

Please provide the solution to the attached problem

Part C - Assigning absorption peaks in an NMR spectrum Using the concepts of chemical shift and spin-spin splitting, assign the listed resonances to the structure of ethyl butanoate. Identify the resonances by dragging the appropriate labels to their respective targets. View Available Hint(s) 1.2 ppm (3H triplet) 4.1 ppm (2H quartet) 1.6 ppm (2H sextet) 0.9 ppm (3H triplet) 2.3 ppm (2H triplet) HHO | | || H₂C-C-C-C-0-C-CH₂- I HH H I 1 H Reset Help