2. When a student ran an asymmetric dihydroxylation reaction using cis-stilbene and the ligand (DHQ)2PHAL, the...
2. When a student ran an asymmetric dihydroxylation reaction using cis-stilbene and the ligand (DHQ)2PHAL, the hydrobenzoin showed an optical rotation of 0°. Explain this result.
Homework Answers
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2. When a student ran an asymmetric dihydroxylation reaction
using cis-stilbene and the ligand (DHQ)2PHAL, the...
4. The conversion of 5 to 6 is a reaction called “Sharpless Asymmetric dihydroxylation.” The reagents...
4. The conversion of 5 to 6 is a reaction called “Sharpless Asymmetric dihydroxylation.” The reagents listed for this are: AD-mix-B, CH3SO2NH2, t-BuOH, H20. a) What is compound(s) are described by “AD-mix-B?" (you can simply list them by name). c) What would be different if “AD-mix-a” was used? You don't need to provide a specific structure, but in general what would be different about the compound obtained? OH ОН ma MeO2C Butane-1,4-diol OH OP 2 3 Scheme 1. Sharpless asymmetric...
A student ran the following reaction in the laboratory at 225 K: 2NOBr(g) 2 2NO(g) +...
A student ran the following reaction in the laboratory at 225 K: 2NOBr(g) 2 2NO(g) + Brz(g) When she introduced 0.198 moles of NOBr(g) into a 1.00 liter container, she found the equilibrium concentration of Br2(g) to be 1.89x10-2 M. Calculate the equilibrium constant, Kc, she obtained for this reaction. Kc =
Look up and draw the mechanism for the addition of Br2 to double bonds. Reference the...
Look up and draw the mechanism for the addition of Br2 to
double bonds. Reference the source from which you acquired the
mechanism.
Give the IUPAC name of the major product in the above-mentioned
reaction.
Draw the major product of obtained in the addition of Br2 to
stilbene.
Is this isomer chiral? What would be the optical rotation if
this sample was placed in a polarimeter?
Would a student obtain the same product if you started with
cis-stilbene instead of...
HO HW2. A student ran the Grignard reaction below: CH3MgBr diethyl ether 2-pentanone 2-methyl-2-pentanol HW 3....
HO HW2. A student ran the Grignard reaction below: CH3MgBr diethyl ether 2-pentanone 2-methyl-2-pentanol HW 3. A second student tries to run the same Grignard reaction as in HW 2 and obtains the following FT-IR spectrum: ) transmittance 000 2000 1500 1000 wavenumber(cm) a. Based solely on the IR data, did the second student's reaction go to completion? In other words, was all of the ketone starting material used up? Yes or No and explain. b. When the second student...
1. A student ran the following reaction in the laboratory at 632 K: 2HI(g) ->H2(g) +...
1. A student ran the following reaction in the laboratory at 632 K: 2HI(g) ->H2(g) + I2(g) When she introduced 0.362 moles of HI(g) into a 1.00 liter container, she found the equilibrium concentration of I2(g) to be 3.55×10-2 M. Calculate the equilibrium constant, Kc, she obtained for this reaction. Kc = 2. A student ran the following reaction in the laboratory at 616 K: CO(g) + Cl2(g) -> COCl2(g) When she introduced 0.131 moles of CO(g) and 0.161 moles...
HO HW2. A student ran the Grignard reaction below. CH, MgBr diethyl ether 2-pentanone 2-methyl-2-pentanol Upon c...
HO HW2. A student ran the Grignard reaction below. CH, MgBr diethyl ether 2-pentanone 2-methyl-2-pentanol Upon completing the reaction above (assume all workups), the student performs a crude NMR and FT-IR of the material prior to any purification. The spectra obtained are shown below: transmittance Use the spectra and the table found in the paper by Hugo E. Gottlich, Vadim Kotly, and Abraham Nudelman J. Org. Chem. 1997, 62, 7512-7515) to help answer the following questions (see next page of...
A student ran the following reaction in the laboratory at 651 K: 2NH3(g)N2(g) + 3H2(g) When...
A student ran the following reaction in the laboratory at 651 K: 2NH3(g)N2(g) + 3H2(g) When she introduced 7.88x102 moles of NH (g) into a 1.00 liter container, she found the equilibrium concentration of NH (g) to be 6.75x103 M. Calculate the equilibrium constant, Kc, she obtained for this reaction. Kc
The box in the reaction equation is an equilibrium sign. ulat... 2req A student ran the...
The
box in the reaction equation is an equilibrium sign.
ulat... 2req A student ran the following reaction in the laboratory at 726 K: ration ion ion N2(g)+3H2(g) 2NH3(g) ion When she introduced 3.30x 10-2 moles of N2(g) and 6.61x102 moles of H2(g) into a 1.00 liter container, pulati... M) M) ng Eq... she found the equilibrium concentration of H2(g) to be 6.44x102 M ibri... 2req Calculate the equilibrium constant, Kç, she obtained ng Eq... for this reaction tio... 2req...
A student ran the following reaction in the laboratory at 325 K 2NO(8) + Br2(e)2NOBr(g) When...
A student ran the following reaction in the laboratory at 325 K 2NO(8) + Br2(e)2NOBr(g) When she introduced 0.120 moles of NO(g) and 9.52x102 moles of Br2(g) into a 1.00 liter container, she found the equilibrium concentration of Br2(g) to be 5.35x102 M. Calculate the equilibrium constant, Kg, she obtained for this reaction. Ke
A student ran the following reaction in the laboratory at 294 K: 2CH2Cl2(g) ____> CH4(g) +...
A student ran the following reaction in the laboratory at 294 K: 2CH2Cl2(g) ____> CH4(g) + CCl4(g) When she introduced 7.04×10-2 moles of CH2Cl2(g) into a 1.00 Liter container, she found the equilibrium concentration of CCl4(g) to be 3.25×10-2 M. Calculate the equilibrium constant, Kc, she obtained for this reaction.
4. The conversion of 5 to 6 is a reaction called “Sharpless Asymmetric dihydroxylation.” The reagents listed for this are: AD-mix-B, CH3SO2NH2, t-BuOH, H20. a) What is compound(s) are described by “AD-mix-B?" (you can simply list them by name). c) What would be different if “AD-mix-a” was used? You don't need to provide a specific structure, but in general what would be different about the compound obtained? OH ОН ma MeO2C Butane-1,4-diol OH OP 2 3 Scheme 1. Sharpless asymmetric...
A student ran the following reaction in the laboratory at 225 K: 2NOBr(g) 2 2NO(g) + Brz(g) When she introduced 0.198 moles of NOBr(g) into a 1.00 liter container, she found the equilibrium concentration of Br2(g) to be 1.89x10-2 M. Calculate the equilibrium constant, Kc, she obtained for this reaction. Kc =
Look up and draw the mechanism for the addition of Br2 to
double bonds. Reference the source from which you acquired the
mechanism.
Give the IUPAC name of the major product in the above-mentioned
reaction.
Draw the major product of obtained in the addition of Br2 to
stilbene.
Is this isomer chiral? What would be the optical rotation if
this sample was placed in a polarimeter?
Would a student obtain the same product if you started with
cis-stilbene instead of...
HO HW2. A student ran the Grignard reaction below: CH3MgBr diethyl ether 2-pentanone 2-methyl-2-pentanol HW 3. A second student tries to run the same Grignard reaction as in HW 2 and obtains the following FT-IR spectrum: ) transmittance 000 2000 1500 1000 wavenumber(cm) a. Based solely on the IR data, did the second student's reaction go to completion? In other words, was all of the ketone starting material used up? Yes or No and explain. b. When the second student...
HO HW2. A student ran the Grignard reaction below. CH, MgBr diethyl ether 2-pentanone 2-methyl-2-pentanol Upon completing the reaction above (assume all workups), the student performs a crude NMR and FT-IR of the material prior to any purification. The spectra obtained are shown below: transmittance Use the spectra and the table found in the paper by Hugo E. Gottlich, Vadim Kotly, and Abraham Nudelman J. Org. Chem. 1997, 62, 7512-7515) to help answer the following questions (see next page of...
A student ran the following reaction in the laboratory at 651 K: 2NH3(g)N2(g) + 3H2(g) When she introduced 7.88x102 moles of NH (g) into a 1.00 liter container, she found the equilibrium concentration of NH (g) to be 6.75x103 M. Calculate the equilibrium constant, Kc, she obtained for this reaction. Kc
The
box in the reaction equation is an equilibrium sign.
ulat... 2req A student ran the following reaction in the laboratory at 726 K: ration ion ion N2(g)+3H2(g) 2NH3(g) ion When she introduced 3.30x 10-2 moles of N2(g) and 6.61x102 moles of H2(g) into a 1.00 liter container, pulati... M) M) ng Eq... she found the equilibrium concentration of H2(g) to be 6.44x102 M ibri... 2req Calculate the equilibrium constant, Kç, she obtained ng Eq... for this reaction tio... 2req...
A student ran the following reaction in the laboratory at 325 K 2NO(8) + Br2(e)2NOBr(g) When she introduced 0.120 moles of NO(g) and 9.52x102 moles of Br2(g) into a 1.00 liter container, she found the equilibrium concentration of Br2(g) to be 5.35x102 M. Calculate the equilibrium constant, Kg, she obtained for this reaction. Ke
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