Here is a pair of aromatic compounds that each have a complicated set of aromatic peaks....
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Here is a pair of aromatic compounds that each have a complicated
set of aromatic peaks....
I have an proton NMR for a compound that I believe to be Salicylic Acid. It...
I have an proton NMR for a compound that I believe to be Salicylic Acid. It has major peaks at 11.0 ppm as well as around 10.5 ppm. Both peaks are broad singlets indicating that they should be -OH peaks. However, the typical Phenol has a peak around 5-6 ppm. Could it be possible that the aromatic ring and carbonyl group from the carboxylic acid influenced the phenol group enough to shift it that far downfield?
For each set of compounds shown below, rank them in order of the 'H NMR chemical shift of their o...
For each set of compounds shown below, rank them in order of the 'H NMR chemical shift of their ortho hydrogen atoms, labeling the structures "1" (highest) through "3" (lowest). 12 pts each 6pts) a) 1. NH2 b) Ha c) NH2 CN NO2 2. Would you expect the 'H NMR chemical shift of the ortho hydrogen atoms of the phenoxide anion to be higher or lower than those of phenol? Explain briefly. [2 pts он vs
For each set of...
describe the relationship between each pair of compounds. Use the following set of terms to describe...
describe the relationship between each pair of compounds.
Use the following set of terms to describe the relationship(s) between each pair of compounds by placing the correct letter(s) on each line. Terms may be used more than once or not at all. Each pair of compounds may have more than one relationship, or they may have no relationship (option F). Circle any meso compounds in questions 1-4. A. stereoisomers D. diastereomers B. constitutional isomers E. enantiomers institutional isomers C. identical...
its a little hard to see but i have it set up to where the NMR...
its a little hard to see but i have it set up to where the NMR
and IR analysis for the unknowns are across from each other and
then it goes in order from 1-7. Help me to identify which unknown
analysis goes to which compound.
ZOOM + Lab 8: Instrumental Analysis You are given seven unknowns, all of which are white or brown powders. Use the provided IR and H NMR spectra to assign Unknowns 1-7 to the given...
Analyze each pair of compounds structures represent. Your cho cach pair of compounds below. Identify which...
Analyze each pair of compounds structures represent. Your cho cach pair of compounds below. Identify which class of isomers each pair of s represent. Your choices are: (i) constitutional, (ii) conformational, (iii) omers, (iv) diastereomer or (v) identical (non-isomers). Only one label for each pair should be used. For each case show work (drawings, (R)/(S), rotation of bonds, chair- "ps, etc) which led you to each answer for the pairs below. Any differences of answers between you and your peers...
please need help with all the questions and ASAP, thank you 11. Please predict the principle...
please need help with all the questions and ASAP, thank you
11. Please predict the principle organic product of the following reactions, show stereochemistry where appropriate. Note that some reactions involve isotope-labeled compounds, in those cases the correct isotope must be used. (66') 1. LIAID 2. H,O (1) 18 1) THF (2). CH3Li + 2) HaO NaBH4 (3) CH3OD H2(excess)/Pt (4) d herd (5). - Mg Br D2O diethyl ether Br +Li (6) diethyl ether LICu(CH2CHs)2 Br (7). 1. diethyl...
Name: Question 11 Four compounds are shown below. Circle which compound is represented by the IR...
Name: Question 11 Four compounds are shown below. Circle which compound is represented by the IR spectrum above. n is in Briefly explain your reasoning (Think about what is present in the spectrum and what is not present) Structure VENURSER Structure Name: Structure Structure Structure Structure Question 12 1. On the following pages, you will find six IR spectra labeled A-F. Match each of the spectra with one of the following seven compounds (write the letter of the spectrum in...
In this problem you have to elucidate the structure of product B. A substrate A (structure...
In this problem you have to elucidate the structure of product B. A substrate A (structure shown in scheme 1) which was subjected to two consecutive reactions as shown in scheme 1 below to give the product B of molecular formula CsH14Br2. Provide the structure for Product B based on the NMR data provided (attachment 2: Problem set 2). (The 1H NMR and 13C NMR of starting substrate A has been provided for reference purpose only) 1. MnO2, CHCI3, rt,...
Problem set 2: (25 marks) In this problem you have to elucidate the structure of product B. A substrate A (str...
Problem set 2: (25 marks) In this problem you have to elucidate the structure of product B. A substrate A (structure shown in scheme 1) which was subjected to two consecutive reactions as shown in scheme 1 below to give the product B of molecular formula CsH14Br2. Provide the structure for Product B based on the NMR data provided (attachment 2: Problem set 2). (The 1H NMR and 13C NMR of starting substrate A has been provided for reference purpose...
Complete questions 10-27 PART II: REACTIONS: Here is another different" question. Pretend you have been asked...
Complete questions 10-27
PART II: REACTIONS: Here is another different" question. Pretend you have been asked by me to put together a bunch of one-step reactions WITH starting materials (your choice), reagents and answers to help me with writing a final exam. For example: let's say I ask you to give an example of a free radical chlorination with a non-cyclic compound. Below would be your answer. As I am pretty sure you can figure out, there are millions of...
For each set of compounds shown below, rank them in order of the 'H NMR chemical shift of their ortho hydrogen atoms, labeling the structures "1" (highest) through "3" (lowest). 12 pts each 6pts) a) 1. NH2 b) Ha c) NH2 CN NO2 2. Would you expect the 'H NMR chemical shift of the ortho hydrogen atoms of the phenoxide anion to be higher or lower than those of phenol? Explain briefly. [2 pts он vs
For each set of...
describe the relationship between each pair of compounds.
Use the following set of terms to describe the relationship(s) between each pair of compounds by placing the correct letter(s) on each line. Terms may be used more than once or not at all. Each pair of compounds may have more than one relationship, or they may have no relationship (option F). Circle any meso compounds in questions 1-4. A. stereoisomers D. diastereomers B. constitutional isomers E. enantiomers institutional isomers C. identical...
its a little hard to see but i have it set up to where the NMR
and IR analysis for the unknowns are across from each other and
then it goes in order from 1-7. Help me to identify which unknown
analysis goes to which compound.
ZOOM + Lab 8: Instrumental Analysis You are given seven unknowns, all of which are white or brown powders. Use the provided IR and H NMR spectra to assign Unknowns 1-7 to the given...
Analyze each pair of compounds structures represent. Your cho cach pair of compounds below. Identify which class of isomers each pair of s represent. Your choices are: (i) constitutional, (ii) conformational, (iii) omers, (iv) diastereomer or (v) identical (non-isomers). Only one label for each pair should be used. For each case show work (drawings, (R)/(S), rotation of bonds, chair- "ps, etc) which led you to each answer for the pairs below. Any differences of answers between you and your peers...
please need help with all the questions and ASAP, thank you
11. Please predict the principle organic product of the following reactions, show stereochemistry where appropriate. Note that some reactions involve isotope-labeled compounds, in those cases the correct isotope must be used. (66') 1. LIAID 2. H,O (1) 18 1) THF (2). CH3Li + 2) HaO NaBH4 (3) CH3OD H2(excess)/Pt (4) d herd (5). - Mg Br D2O diethyl ether Br +Li (6) diethyl ether LICu(CH2CHs)2 Br (7). 1. diethyl...
Name: Question 11 Four compounds are shown below. Circle which compound is represented by the IR spectrum above. n is in Briefly explain your reasoning (Think about what is present in the spectrum and what is not present) Structure VENURSER Structure Name: Structure Structure Structure Structure Question 12 1. On the following pages, you will find six IR spectra labeled A-F. Match each of the spectra with one of the following seven compounds (write the letter of the spectrum in...
In this problem you have to elucidate the structure of product B. A substrate A (structure shown in scheme 1) which was subjected to two consecutive reactions as shown in scheme 1 below to give the product B of molecular formula CsH14Br2. Provide the structure for Product B based on the NMR data provided (attachment 2: Problem set 2). (The 1H NMR and 13C NMR of starting substrate A has been provided for reference purpose only) 1. MnO2, CHCI3, rt,...
Problem set 2: (25 marks) In this problem you have to elucidate the structure of product B. A substrate A (structure shown in scheme 1) which was subjected to two consecutive reactions as shown in scheme 1 below to give the product B of molecular formula CsH14Br2. Provide the structure for Product B based on the NMR data provided (attachment 2: Problem set 2). (The 1H NMR and 13C NMR of starting substrate A has been provided for reference purpose...
Complete questions 10-27
PART II: REACTIONS: Here is another different" question. Pretend you have been asked by me to put together a bunch of one-step reactions WITH starting materials (your choice), reagents and answers to help me with writing a final exam. For example: let's say I ask you to give an example of a free radical chlorination with a non-cyclic compound. Below would be your answer. As I am pretty sure you can figure out, there are millions of...
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