Determine the structures of the following compounds given the following 1H-NMR data sets. The molecular formula...
Determin the structures of the following compounds given the
following 1H-NMR data sets. The molecular formula for these
consisutional isomers is C4H8O
1. (10 points) Determine the structures of the following compounds given the following 1H-NMR data sets. The molecular formula for these constitutional isomers is: CHO Compound A H 2.5 ppm splitting integration H. 1.8 g 2 H 3.5 q 2 Ha 4.5 р 1 H 4.8 t (dd) 1 HI 4.8 t (dd) 1 t 1 Compound B...
Determine the structures of the following compounds given the
following 1H-NMR data sets. The molecular formula for these
constitutional isomers is: C4H8O
Determine the structures of the following compounds given the following 1H-NMR data sets. The molecular formula for these constitutional isomers is: CHO Compound A HA 1.8 нь 2.5 H 3.5 HA 4.5 ppm splitting integration HE 4.8 t(dd) 1 HA 4.8 t(dd) 1 t q 2 q 2 P 1 1
Identify A and B, isomers of molecular formula C3H4Cl2, from the given 1H NMR data: Compound A exhibits peaks at 1.75 (doublet, 3 H, J = 6.9 Hz) and 5.89 (quartet, 1 H, J = 6.9 Hz) ppm. Compound B exhibits peaks at 4.16 (singlet, 2 H), 5.42 (doublet, 1 H, J = 1.9 Hz), and 5.59 (doublet, 1 H, J = 1.9 Hz) ppm. Compound A: draw structure Compound B: draw structure
5.314 Whee 10.0 9.5 9.0 8.5 8.0 7.5 2.500 70 6.5 6.0 5.5 ppm 5.0 46 40 35 30 25 20 15 10 d. Shown below are the starting material propiophenone (1), and the product of alpha bromination (2), Determine how each compound could be easily identified by HNMR of the alkyl substituent by identifying the approximate chemical shift, integration, and splitting you would observe for the protons labeled in each compound. 4pts Proton Approx. shift, ppm Integ. Splitting: s,d,...
NEED HELP WITH B) C) D) E) F) and G) that apply to the
spectra below.
OTHER ANSWERS ARE THERE TO SUPPLEMENT
Thank you!
5. Using the GC mentioned in question 4 and the values listed on
the chromatogram for the height and width (at half height) of each
peak, calculate the percent composition for each product (A, B and
C). Be sure to show your work.
Area of peak A = 125 x 8 =
1000mm2
Area of peak...
Choose the 1H NMR associated with this compound, The integration and splitting is provided. (s-singlet, d-doublet. t-triplet. q-quartet, m-multiplet) O 2.1 3 6 IM Y 8 PPM o 10 3.5 3.d 12 116 9: 10 18 ppm 10: 2.5 35 11 22 1d - 12 1.d 24 e 13 35 3,5 3,5 1,5 pom
Can you please show the structure of the ester and fill out an
NMR analysis table for the synthesis of banana based on the NMR
below? Could you also briefly explain your choice?
2. Banana
Acid: Acetic acid
Alcohol: Isoamyl alcohol
Structure of the ester:
Example of a’H-NMR analysis table: Hb Ho Labeled structure: Ha Há Ha Chemical Shift (ppm) Integration Splitting (n+1 rule) Structural Assignment (label of the corresponding proton) 1.8 ppm 3 3 Н. 3.1 ppm 2 4...
The following is the predicted 1H-NMR spectrum for an
unknown compound with molecular formula C6H14O. This compound is a
liquid at room temperature, is slightly soluble in water, and
reacts with sodium metal with the evolution of a gas.
9H 1 1H 2 1H 31H 4 2H Not Submitted PPM Choose from the constitutional isomers below to assign a structure to this spectrum. CH3 CH3 ba CH2CH3 CH3CH2CH2CHCH2OH a b c d e g CH3CH2CHCHCH3 а ь | OH f...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...