Homework Answers
Interpretation of spectra
60- is 4-hydroxybenzoate ion reacts with 61 1-bromobutane
Mass of 61
showed two peaks at 136 and 138 in ratio 1 : 1, confirms Br-isotopes present (79 and 81 mass number)
IR of 60
showed peak at 3350 cm-1 for O-H stretch
1780 cm-1 for C=O stretch
1500-1600 cm-1 for C=C stretch
The reaction is shown below
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When 60 reacts with 61 (MS shown) by an S_N2 mechanism, it forms compound 62, which...
Which of the following reacts fastest with NaOH in ethanol by S_N2 mechanism. CH_3Cl CH_3 Br...
Which of the following reacts fastest with NaOH in ethanol by S_N2 mechanism. CH_3Cl CH_3 Br which of the following reagent can be used to prepare benzoic acid (Ph-CO_2-H) from Fe/H_2SO_4 CH_3COOH KMnO_4 Intermediate in the S_N1 mechanism is a carbonium ion free-radical carbon with 5-bonds a primary carbon Transition state in the S_N2 mechanism is a primary carbon free-radical carbonium ion carbon with 5-bonds carbanion Which of the following reagent(s) given the reaction below CH_3Br HBr Br_2/CCl_4 NBS/CCl_4 CH_2Br/FeBr_3...
is a compound that contains two double bonds. When 1,3-cyclohexadiene reacts with DBr (analogous to HBr)...
is a compound that contains two double bonds. When 1,3-cyclohexadiene reacts with DBr (analogous to HBr) the following is observed. DBr O & & major product not formed a) Using words and structures, explain this distribution of products. b) Another product is formed in this reaction, shown below. Write a mechanism to explain its formation.
Mechanism predicts that 4b should be formed. may be nepiu to 61 Several natural products have bee...
mechanism predicts that 4b should be formed. may be nepiu to 61 Several natural products have been isolated from the flowering plant Sarcostemme acidum, which has been used in folk medicine as a cough suppressant During efforts to make these compounds in the laboratory, it was discovered that one of the natural products is readily converted into another one of the natural products in a cyclization reaction that occurs upon treatment with a strong acid.10 A similar cyclization is shown...
Name: Question 11 Four compounds are shown below. Circle which compound is represented by the IR...
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9. (2 pts) Which is the major product formed when the compound shown below is heated?...
9. (2 pts) Which is the major product formed when the compound shown below is heated? CH3CH2C-CHEC-OH 10. (2 pts) What is the IUPAC name for the following compound? H2N COOH 11. (4 pts each) For each reaction complete the following: 1. Name the starting compound(s). 2. Name the type of reaction 3. Complete the reaction and 4. Draw the final structures. a) CH3CH2CH2COOH + CH3CH2OH H+ → b) 0, + NaOH ?
The following slides contain 1H and 13C-NMR spectra as well as GC/MS spectra for compound 2...
The following slides contain 1H and 13C-NMR spectra as well as
GC/MS spectra for compound 2 shown below. After analyzing the
spectra, assign all proton and carbon NMR signals using the
numbering given on the structure. Additionally, present your data
in table form including chemical shift, integration, coupling
pattern, and coupling constants (where possible). For mass spectral
data, justify key fragmentations (those which are starred*) by
proposing fragment structures.
5 96337 03828 047734 739073 23444 14703 3 8 9 2...
7. Shown below are the major product formed and the proposed mechanism when 1- methylcyclohexanol reacts...
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59. Autotroph 60. Heterotroph 61. Energy form all living things ultimately comes from the 62. Write the equation for photosynthesis 63. In visible light _wavelengths are the shortest and are the longest 64. In visible light wavelengths have the most energy and have the least 65. What is the main pigment for photosynthesis? ___ The accessory pigments are Complete the following table: Light Dependent Reaction Light Independent Reaction 66. Specifically, where does it take place? 67. What is oxidized? 68....
Take the following compound, benzoquinone, which is considered a 'readily available starting material' in this t...
Take the following compound, benzoquinone, which is considered a 'readily available starting material' in this task. Devise a 7 step synthesis starting from benzoquinone (i.e. create your own target molecule). You may use any chemically reasonable reactions and any other reagents as necessary, however, there must be two or more carbon-carbon bond forming reactions included. Strictly follow the requirements stated below to complete this task: 1) Present the synthesis as a reaction scheme, giving all reagents and any special reaction...
Which of the following reacts fastest with NaOH in ethanol by S_N2 mechanism. CH_3Cl CH_3 Br which of the following reagent can be used to prepare benzoic acid (Ph-CO_2-H) from Fe/H_2SO_4 CH_3COOH KMnO_4 Intermediate in the S_N1 mechanism is a carbonium ion free-radical carbon with 5-bonds a primary carbon Transition state in the S_N2 mechanism is a primary carbon free-radical carbonium ion carbon with 5-bonds carbanion Which of the following reagent(s) given the reaction below CH_3Br HBr Br_2/CCl_4 NBS/CCl_4 CH_2Br/FeBr_3...
is a compound that contains two double bonds. When 1,3-cyclohexadiene reacts with DBr (analogous to HBr) the following is observed. DBr O & & major product not formed a) Using words and structures, explain this distribution of products. b) Another product is formed in this reaction, shown below. Write a mechanism to explain its formation.
mechanism predicts that 4b should be formed. may be nepiu to 61 Several natural products have been isolated from the flowering plant Sarcostemme acidum, which has been used in folk medicine as a cough suppressant During efforts to make these compounds in the laboratory, it was discovered that one of the natural products is readily converted into another one of the natural products in a cyclization reaction that occurs upon treatment with a strong acid.10 A similar cyclization is shown...
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...
Problem #23: When compound X (C,H,Br) is reacted with sodium cyanide (NaCN) forms compound Y (C,H,N). Compound Y, upon reduction with H over a Ni catalyst, yields compound Z (C,HIN. The 'H NMR spectrum of X gives two signals, a multiplet at δ = 7.3 ppm (5H) and a singlet at δ 4.25 ppm (2H). The 'H NMR spectrum of Y is similar to that of X in that it shows a multiplet at ö-7.3 ppm (5H) and a singlet...
9. (2 pts) Which is the major product formed when the compound shown below is heated? CH3CH2C-CHEC-OH 10. (2 pts) What is the IUPAC name for the following compound? H2N COOH 11. (4 pts each) For each reaction complete the following: 1. Name the starting compound(s). 2. Name the type of reaction 3. Complete the reaction and 4. Draw the final structures. a) CH3CH2CH2COOH + CH3CH2OH H+ → b) 0, + NaOH ?
The following slides contain 1H and 13C-NMR spectra as well as
GC/MS spectra for compound 2 shown below. After analyzing the
spectra, assign all proton and carbon NMR signals using the
numbering given on the structure. Additionally, present your data
in table form including chemical shift, integration, coupling
pattern, and coupling constants (where possible). For mass spectral
data, justify key fragmentations (those which are starred*) by
proposing fragment structures.
5 96337 03828 047734 739073 23444 14703 3 8 9 2...
7. Shown below are the major product formed and the proposed mechanism when 1- methylcyclohexanol reacts with 85% H3PO4 at 150 °C. Name all curved arrows shown in each step as either "lone pair to bond" or "bond to long pair". Specify the atom that donates/accepts the lone pair. [1 Mark] Step 1 -H O ro-H + Ho + H2O H H Commons Kagamo Step 2 + H2O Step 3 = + H,PO. H HAPO Zaitsev product 6. Given below...
59. Autotroph 60. Heterotroph 61. Energy form all living things ultimately comes from the 62. Write the equation for photosynthesis 63. In visible light _wavelengths are the shortest and are the longest 64. In visible light wavelengths have the most energy and have the least 65. What is the main pigment for photosynthesis? ___ The accessory pigments are Complete the following table: Light Dependent Reaction Light Independent Reaction 66. Specifically, where does it take place? 67. What is oxidized? 68....
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