Homework Answers
Add Answer to:
hen the ketone below is treated with BF3 in acetic acid, ring closure takes place to...
3. When compound E below is heated in acetic (ethanoic) acid, substance F of formula CHi402...
3. When compound E below is heated in acetic (ethanoic) acid, substance F of formula CHi402 is produced together with product G of formula CsHio. Provide the structures of F and G and write accurate mechanisms for their formation. он CI heat
The epoxide below can be opened with acetic acid. Draw the complete mechanism. Show all electron...
The epoxide below can be opened with acetic acid. Draw the complete mechanism. Show all electron lone-pairs, formal charges and curved arrow notation. OH The reaction above is regioselective. Draw the transition state for the rate determining step above and the Use that to explain why addition takes place at the most substituted carbon of the epoxide. Transition states should include partial charges and dashed lines to indicate partial bond formation or cleavage
4. Multiple Choice Place your answer in the space provided. (2 pts. each; 12 pts. total)...
4. Multiple Choice Place your answer in the space provided. (2 pts. each; 12 pts. total) Which is NOT true of the aldol condensation? A. It accomplishes the formation of a new carbon-carbon bond B. The enolate is favored at equilibrium (assume NaOH as the base) C. The key step is the mechanism is attack of the enolate ion on a carbonyl carbon atom D. Dehydration of the aldol product is often observed and is irreversible. _Which sets of hydrogen...
3. (25 points) All six membered ring sugars, in the presence of acid and a nucleophile,...
3. (25 points) All six membered ring sugars, in the presence of acid and a nucleophile, proceed via an Sn1 mechanism to yield only 1 product (as shown below). A) Provide a mechanism for the following reaction. Include all intermediates, resonance structures, charges, and electron pushing arrows to obtain full credit. B Why does the reaction not occur at the other 4 possible positions where there are alcohols? You may use mechanisms or intermediates to explain your answer. ООН OCH,...
1) Draw which species would be present if you were to dissolve the hydroxyl-acid shown below...
1) Draw which species would be present if you were to dissolve the hydroxyl-acid shown below in (a) aqueous solution at pH 7, (b) aqueous solution at pH 12, and (c) aqueous solution at pH O. 2) What would you expect to be the site of (a) protonation and (b) deprotonation if the compounds below were treated with an appropriate acid or base? In each case draw the conjugate acid or base forms. ОН
2. Not only does an aromatic ring itself affect the reactivity of an acid derivative (an ester, o...
2. Not only does an aromatic ring itself affect the reactivity of an acid derivative (an ester, on last year's quiz), substituents on the aromatic ring can further modify the reactivity. First, we will consider a phenyl amide with a para-acetyl substituent: CH, (a) What is the n-effect (resonance) of the para-acetyl substituent? How will that affect the reactivity of the other (amide) carbonyl in the molecule below (increase or decrease, compared to the same amide but with no p-...
please help in all sections asap!! In a Clemmensen reduction, an aryl ketone is reduced to...
please help in all sections asap!!
In a Clemmensen reduction, an aryl ketone is reduced to an Oaryl aldehyde Caryl alkane aryl carboxylic acid aryl ester aryi anhydride Identify the electrophile for the Friedel-Crafts acylation of benzene. O aluminum tetrachloride anion aluminum chloride acylium ion carbocation carbanion Which of the following criteria is necessary for a nucleophilic aromatic substitution reaction? © A. The ring must contain a very strong electron withdrawing group. B. The ring must contain a leaving group....
2. Explain why cycloheptatriene, shown below, will react with an acid to form a carbocation (the...
2. Explain why cycloheptatriene, shown below, will react with an acid to form a carbocation (the tropyllum ion)? 3. Predict the major organic product in the following reaction HBT 4. What is the major product of the following reaction? OH HINO, TO CHÚCH . 5. What is the major product of the following reaction? ME E1,0 2)H,09 6. We learned that the bond dissociation ener() of the highlighted C-H bond in toluene is lower than the DE of the C-H...
In the titration below acetic acid (CH CooH)i (a) What is the volume of NaOH used to neutralize t...
In the titration below acetic acid (CH CooH)i (a) What is the volume of NaOH used to neutralize the acetic ac neutralized with 0.5 M NaOH. id? (3 pts) (b) What is the concentration of the acetic acid solution? (7 pts) nial Reading 15m Burette Final Reading 32 ml NeDH (aq Known Concentraton )+20mt_灬| 1 of Total volume of 2 on vnegar ies 5 drops acetic acid 25ml c) An acid solution is titrated to the end point by a...
please answer b) and question 3 b) An uknown ketone F reacted with CH,CH MgBr, followed...
please answer b) and question 3
b) An uknown ketone F reacted with CH,CH MgBr, followed by acidic hydrolysis to produce alcohol G, CHO. Reaction of F with sodium borohydride in methanol gives compound J, a chiral compound that undergoes dehydration with concentrated sulphuric acid to give 2-pentene as the major product. Write the reaction scheme involved and deduce the structure of F, Gand K Ketone F yang tidak diketahui bertindak balas dengan CH,CH MgBr, dikut dengan hidrolisis berasid menghasilkan...
3. When compound E below is heated in acetic (ethanoic) acid, substance F of formula CHi402 is produced together with product G of formula CsHio. Provide the structures of F and G and write accurate mechanisms for their formation. он CI heat
The epoxide below can be opened with acetic acid. Draw the complete mechanism. Show all electron lone-pairs, formal charges and curved arrow notation. OH The reaction above is regioselective. Draw the transition state for the rate determining step above and the Use that to explain why addition takes place at the most substituted carbon of the epoxide. Transition states should include partial charges and dashed lines to indicate partial bond formation or cleavage
4. Multiple Choice Place your answer in the space provided. (2 pts. each; 12 pts. total) Which is NOT true of the aldol condensation? A. It accomplishes the formation of a new carbon-carbon bond B. The enolate is favored at equilibrium (assume NaOH as the base) C. The key step is the mechanism is attack of the enolate ion on a carbonyl carbon atom D. Dehydration of the aldol product is often observed and is irreversible. _Which sets of hydrogen...
3. (25 points) All six membered ring sugars, in the presence of acid and a nucleophile, proceed via an Sn1 mechanism to yield only 1 product (as shown below). A) Provide a mechanism for the following reaction. Include all intermediates, resonance structures, charges, and electron pushing arrows to obtain full credit. B Why does the reaction not occur at the other 4 possible positions where there are alcohols? You may use mechanisms or intermediates to explain your answer. ООН OCH,...
1) Draw which species would be present if you were to dissolve the hydroxyl-acid shown below in (a) aqueous solution at pH 7, (b) aqueous solution at pH 12, and (c) aqueous solution at pH O. 2) What would you expect to be the site of (a) protonation and (b) deprotonation if the compounds below were treated with an appropriate acid or base? In each case draw the conjugate acid or base forms. ОН
2. Not only does an aromatic ring itself affect the reactivity of an acid derivative (an ester, on last year's quiz), substituents on the aromatic ring can further modify the reactivity. First, we will consider a phenyl amide with a para-acetyl substituent: CH, (a) What is the n-effect (resonance) of the para-acetyl substituent? How will that affect the reactivity of the other (amide) carbonyl in the molecule below (increase or decrease, compared to the same amide but with no p-...
please help in all sections asap!!
In a Clemmensen reduction, an aryl ketone is reduced to an Oaryl aldehyde Caryl alkane aryl carboxylic acid aryl ester aryi anhydride Identify the electrophile for the Friedel-Crafts acylation of benzene. O aluminum tetrachloride anion aluminum chloride acylium ion carbocation carbanion Which of the following criteria is necessary for a nucleophilic aromatic substitution reaction? © A. The ring must contain a very strong electron withdrawing group. B. The ring must contain a leaving group....
2. Explain why cycloheptatriene, shown below, will react with an acid to form a carbocation (the tropyllum ion)? 3. Predict the major organic product in the following reaction HBT 4. What is the major product of the following reaction? OH HINO, TO CHÚCH . 5. What is the major product of the following reaction? ME E1,0 2)H,09 6. We learned that the bond dissociation ener() of the highlighted C-H bond in toluene is lower than the DE of the C-H...
In the titration below acetic acid (CH CooH)i (a) What is the volume of NaOH used to neutralize the acetic ac neutralized with 0.5 M NaOH. id? (3 pts) (b) What is the concentration of the acetic acid solution? (7 pts) nial Reading 15m Burette Final Reading 32 ml NeDH (aq Known Concentraton )+20mt_灬| 1 of Total volume of 2 on vnegar ies 5 drops acetic acid 25ml c) An acid solution is titrated to the end point by a...
please answer b) and question 3
b) An uknown ketone F reacted with CH,CH MgBr, followed by acidic hydrolysis to produce alcohol G, CHO. Reaction of F with sodium borohydride in methanol gives compound J, a chiral compound that undergoes dehydration with concentrated sulphuric acid to give 2-pentene as the major product. Write the reaction scheme involved and deduce the structure of F, Gand K Ketone F yang tidak diketahui bertindak balas dengan CH,CH MgBr, dikut dengan hidrolisis berasid menghasilkan...
Most questions answered within 3 hours.
-
Calculate the approximate number of residues of Rubisco, which
is involved in carbon fixation in plants,...
asked 45 seconds from now -
Other decisions about scientific claims can have a much broader
impact.ENERGYarrow-10x10.png, environment, health, security - all...
asked 54 minutes ago -
I need to write a research paper and work cited about this
topic: The United States...
asked 1 hour ago -
Hello! I was wondering if I could have some help?
If the vapor pressure of carvone...
asked 1 hour ago -
An economist wants to estimate the mean per capita income (in
thousands of dollars) for a...
asked 1 hour ago -
What would be the input/output characteristic of a circuit
obtained by putting two of your 2's-complementers...
asked 1 hour ago -
In Drosophila, the transition from the syncytial blastoderm
stage to the cellular blastoderm stage is a...
asked 2 hours ago -
Project management question:
Name 3 different types of resources (hint: humans are one
type)
asked 2 hours ago -
Consider the following reaction: C 2H 2( g) + 2H 2( g) C 2H 6(
g)...
asked 2 hours ago -
Consider a 1.0 L buffer containing 0.092 mol L-1 HCOOH and 0.100
mol L-1 HCOO-. What...
asked 2 hours ago -
Koch Realty has owned a vacant land with a FMV of
$775,000 and an adjusted basis...
asked 2 hours ago -
It is estimated 29% of all adults in United States invest in
stocks and that 85%...
asked 2 hours ago