Homework Answers
ANSWER:-
all singlet at 2.0 ppm is due to the all OAc group (CH3)
peak at 4.1 ppm is due to H6 proton (double doublet) coupling J= 12.3 and 2.3 Hz
peak at 4.2 ppm is due to H5 proton (doublet of doublet of doublet) J=10.2, 4.4 , 2.4 Hz
peak at 4.30 ppm is due to again H6 proton ( doublet of doublet) J= 12.3 , 4.3 Hz
peak at 5.20 ppm is due to the H2 (doublet of doublet) J= 10.4 ,3.6 Hz
peak at 5.35 ppm is due to the H4 proton (triplet) J= 9.9 Hz
peak at 5.80 ppm is due to H3 proton(triplet) J=9.9 Hz
peak at 6.6 ppm is due to H1 proton (doublet) J=3.6 Hz
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H NMR if alpha-d-pentaacetate
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KBr压片法 LOO 透过率/% MY D 4000 3000 2000 OOST 1000 500 cm 50 52 HO OH 3499 6 9398 4 3029 50 2996 30 1493 60 1452 34 1403 ge 1306 1336 1323 1298 1253 1210 1199 1179 39...
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1. Signal Assignment. Below are a set of ranges where a specific H' NMR signal might be found. 0.5-2.0ppm 2.0-3.0ppm 3.0-5.Oppm 0.5-6.Oppm 5.0-7.0ppm 7.0-8.Oppm 9.0-10.0ppm 10.0-12.0ppm Assign to the slots above where the following highlighted protons might be found. a) CH3-CH2- b) CH-CH2-CH2- c) HC-0 d) H-C(O)-R e) H-O-R ) H-O-C(O)-R g) H;C-Ar h ) H-C-C- j) CH3-CEC ...some groups appear in the same ppm range. [2pts each group correctly assigned) 2. Signal Splitting. Decide what splitting pattern (singlet, doublet,...
i need help labeling my IR spectrum and H-NMR. I included the h nmr spectrum values....
i need help labeling my IR spectrum and H-NMR. I included the
h nmr spectrum values. for the h-nmr i need help distinguishing
between singlets and doublets.
399.65 MHz 0.039 g: 0.5 ml DMSO-do 9 00 7 6 5 4 3 1 0 N HSP-46-707 ppm HZ ppm Int. 83 122 80 455 276 220 502 1000 430 270 46 91 2868.90 7.179 2865.97 7.172 2864.38 7.168 2860.47 7.158 2858.64 7.153 2856.93 7.149 2854.74 7.144 2852.78 7.139 2850.59 7.133 2846.68...
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need help figuring my unknown and answering these questions
please number every question and explain...studying for exam next
week.
Transmittance 4000 3500 3000 1500 1000 2500 2000 Wavenumbers (cm-1) 500 C:47.358 H:10.598 0:42.06% N:08 X:08 0 10 Solvent We were unable to transcribe this imageMS Analysis When labeling a signal, make sure you are clear which specific one you are labeling (there may be several that are dose! When drawing a structure for a signal, draw directly on the MS...
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FTIR and NMR Spectra After completing a reaction and working up the products, it is still necessary to confirm that the correct product was formed. The most common tools used for this analysis are Fourier Transform Infrared (FTIR) and Nuclear Magnetic Resonance (NMR) spectroscopy. In the virtual laboratory, 'H and C NMR spectra are available. Details on interpreting FTIR and NMR spectra are found in your textbook. Your instructor may or may not...
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I need help with questions 5,
6, & 7. The FTIR and NMR is provided. I also need help creating
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Starting material: methyl acetate.
Solvent: diethyl ether
Reagent: sodium methoxide
Product: methyl acetoacetate
THANK YOU!!!!!
11-8: Claisen Condensation - 1 For this assignment, the target compound that you should synthesize is methyl acetoacetate.This is another carbonyl addition variation. Examine the product and determine which ester is the nucleophile and which is the electrophile. Keep...
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I need help labeling the IR- spectrum and the H-NMR of
hydrobenzoin. I have included the H-NMR spectrum values if needed.
For the H-nmr I need help on labeling singlets and doublets. For
the IR i need help labeling the peaks.
KBr压片法 LOO 透过率/% MY D 4000 3000 2000 OOST 1000 500 cm 50 52 HO OH 3499 6 9398 4 3029 50 2996 30 1493 60 1452 34 1403 ge 1306 1336 1323 1298 1253 1210 1199 1179 39...
1. Signal Assignment. Below are a set of ranges where a specific H' NMR signal might be found. 0.5-2.0ppm 2.0-3.0ppm 3.0-5.Oppm 0.5-6.Oppm 5.0-7.0ppm 7.0-8.Oppm 9.0-10.0ppm 10.0-12.0ppm Assign to the slots above where the following highlighted protons might be found. a) CH3-CH2- b) CH-CH2-CH2- c) HC-0 d) H-C(O)-R e) H-O-R ) H-O-C(O)-R g) H;C-Ar h ) H-C-C- j) CH3-CEC ...some groups appear in the same ppm range. [2pts each group correctly assigned) 2. Signal Splitting. Decide what splitting pattern (singlet, doublet,...
i need help labeling my IR spectrum and H-NMR. I included the
h nmr spectrum values. for the h-nmr i need help distinguishing
between singlets and doublets.
399.65 MHz 0.039 g: 0.5 ml DMSO-do 9 00 7 6 5 4 3 1 0 N HSP-46-707 ppm HZ ppm Int. 83 122 80 455 276 220 502 1000 430 270 46 91 2868.90 7.179 2865.97 7.172 2864.38 7.168 2860.47 7.158 2858.64 7.153 2856.93 7.149 2854.74 7.144 2852.78 7.139 2850.59 7.133 2846.68...
need help figuring my unknown and answering these questions
please number every question and explain...studying for exam next
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Transmittance 4000 3500 3000 1500 1000 2500 2000 Wavenumbers (cm-1) 500 C:47.358 H:10.598 0:42.06% N:08 X:08 0 10 Solvent We were unable to transcribe this imageMS Analysis When labeling a signal, make sure you are clear which specific one you are labeling (there may be several that are dose! When drawing a structure for a signal, draw directly on the MS...
Only need help with 5,6,7
and mechanism
FTIR and NMR Spectra After completing a reaction and working up the products, it is still necessary to confirm that the correct product was formed. The most common tools used for this analysis are Fourier Transform Infrared (FTIR) and Nuclear Magnetic Resonance (NMR) spectroscopy. In the virtual laboratory, 'H and C NMR spectra are available. Details on interpreting FTIR and NMR spectra are found in your textbook. Your instructor may or may not...
I need help with questions 5,
6, & 7. The FTIR and NMR is provided. I also need help creating
a reaction mechanism using the following:
Starting material: methyl acetate.
Solvent: diethyl ether
Reagent: sodium methoxide
Product: methyl acetoacetate
THANK YOU!!!!!
11-8: Claisen Condensation - 1 For this assignment, the target compound that you should synthesize is methyl acetoacetate.This is another carbonyl addition variation. Examine the product and determine which ester is the nucleophile and which is the electrophile. Keep...
I need help with questions 5, 6, & 7. The FTIR and NMR is
provided. I also need help creating a reaction mechanism using the
following:
Starting material: 1,7-Dimethyl-heptanedioate
Solvent: Diethyl ether
Reagent: sodium methoxide
Product: 3-oxo-cyclohexane carboxylic acid methyl ester
THANK YOU!!!!!
Ö 11-11: Dieckmann Reaction For this assignment, the target compound that you should synthesize is 2-oxo-cyclohexane carboxylic acid methyl ester.This is an intramolecular carbonyl addition variation. Examine the product and determine which ester is the nucleophile and...
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