Homework Answers
Add Answer to:
Which of the following nucleophiles would tend to favor conjugate addition to an alpha beta unsaturated...
This reaction is an example of conjugate addition of a nucleophile to an alpha, beta-unsaturated carbonyl....
This reaction is an example of conjugate addition of a nucleophile to an alpha, beta-unsaturated carbonyl. Draw the two resonance structures of the enolate anion intermediate for this reaction.
Which of the following reagents do not react with ketone carbonyls? a. NaBH4 b. (CH3)2Culi c....
Which of the following reagents do not react with ketone carbonyls? a. NaBH4 b. (CH3)2Culi c. LiAlH4 d. CH3MgCl . Treatment of an alcohol with which of the following would produce an ether? a. CISI(CH3)2(C(CH3)3) b. NaH, CICHOCH3 c. NaH, CH3CH2Br d. all of these Conjugate addition to a,B-unsaturated carbonyl compounds is characteristic of a. mild, reversible nucleophiles b. strong, irreversible nucleophiles c. wet oxidizing agents d. large weak electrophiles e. small strong electrophiles f. alkyllithiums
b. NaH, CICHZUCH3 _ 5. Conjugate addition to a, B-unsaturated carbonyl compounds is characteristic of a....
b. NaH, CICHZUCH3 _ 5. Conjugate addition to a, B-unsaturated carbonyl compounds is characteristic of a. mild, reversible nucleophiles b. strong, irreversible nucleophiles c. wet oxidizing agents d. large weak electrophiles e. small strong electrophiles f. alkyllithiums rcle the bond below that does not absorb above 1400 cm? d. C=0 b. C=C a. C-H e. C=N c. C-o 7. Which regent below would effectively yield a nitrile from a benzenediazonium ion a. NaCN c. NaNH. e. NHANH
The following Aldol Condensation produces a mixture of SIX -alpha, beta-unsaturated carbonyl products. DRAW the structure...
The following Aldol Condensation produces a mixture of SIX -alpha, beta-unsaturated carbonyl products. DRAW the structure of all Six the alpha, beta-unsaturated products obtained.
Which of the following reagents does not add to an alpha, beta-unsaturated ketone in a1, 4...
Which of the following reagents does not add to an alpha, beta-unsaturated ketone in a1, 4 -connieaie addition? HCN (CH_3)CuLi CH_3MgBr CH_3CH_2NH_3 Which structure is the enol form of the compound at the right? Which of the compounds below will undego decarboxylation upon heating? 3 only 1 and 3 2 and 3 2, 3, and 4 Which compound cannot form a lactone?
5) Draw the Structure of ALL the alpha/beta unsaturated carbon obtained as the dehydration products from...
5) Draw the Structure of ALL the alpha/beta unsaturated carbon obtained as the dehydration products from the following aldol cond ůco + nsaturated carbonyl products that would be he following aldol condensation: NaOEt 6) The Aldol Condensation below provides only ONE PRODUCT. Provide the structure of the Aldol Dehydration Product and a Full Mechanism to account for its formation. C. –
4. Provide a complete curved-arrow mechanism for each of the following transformations involving conjugate addition Note...
4. Provide a complete curved-arrow mechanism for each of the following transformations involving conjugate addition Note that no stereochemistry is shown or implied in any of these reactions, and you may neglect it in your mechanisms as well. a. For this mechanism, you may assume that the reagent NaBH.CN behaves just like NaBHs, and that it preferentially performs 1,4-addition to unsaturated carbonyl compounds. O ! OME OMe H 1. NaOE, ETOH 2. NaBH CN, MOH oMe ОMe OME OME EtOXOE...
Explain 5. Which of the following underlined alpha hydrogens are the most acidic? A) ping underlined...
Explain
5. Which of the following underlined alpha hydrogens are the most acidic? A) ping underlined alpha hydroul it muc stalde. B) Section: 17-1 Section: 17-1 E) D) CH3-CH O CH3-C-CH2-CH CH3-C-CH2-C-OCH 3 CH3-C-CH3 CH3-C-0-CH3 11.
2) Which of the following underlined alpha hydrogens are the most acidic? A) 0 CH3-CH B)...
2) Which of the following underlined alpha hydrogens are the most acidic? A) 0 CH3-CH B) CH3-C-CH2C-OCH3 C) CH3-C-CH2 CH D) CH3-C-O-CH3 E) CH3-C-CH3
Understand alpha helices and beta pleated sheets Question Which of the following statements is not true...
Understand alpha helices and beta pleated sheets Question Which of the following statements is not true about R groups in B-pleated sheet? a. The R groups of the peptide chain point outside. b. The R groups are attached to the carbons and extend above and below the folds of the pleat. c. The amino acids tend to have smaller R groups. Select the correct answer below: a and b a and c b and c only a FEEDBACK MORE INSTRUCTION...
This reaction is an example of conjugate addition of a nucleophile to an alpha, beta-unsaturated carbonyl. Draw the two resonance structures of the enolate anion intermediate for this reaction.
Which of the following reagents do not react with ketone carbonyls? a. NaBH4 b. (CH3)2Culi c. LiAlH4 d. CH3MgCl . Treatment of an alcohol with which of the following would produce an ether? a. CISI(CH3)2(C(CH3)3) b. NaH, CICHOCH3 c. NaH, CH3CH2Br d. all of these Conjugate addition to a,B-unsaturated carbonyl compounds is characteristic of a. mild, reversible nucleophiles b. strong, irreversible nucleophiles c. wet oxidizing agents d. large weak electrophiles e. small strong electrophiles f. alkyllithiums
b. NaH, CICHZUCH3 _ 5. Conjugate addition to a, B-unsaturated carbonyl compounds is characteristic of a. mild, reversible nucleophiles b. strong, irreversible nucleophiles c. wet oxidizing agents d. large weak electrophiles e. small strong electrophiles f. alkyllithiums rcle the bond below that does not absorb above 1400 cm? d. C=0 b. C=C a. C-H e. C=N c. C-o 7. Which regent below would effectively yield a nitrile from a benzenediazonium ion a. NaCN c. NaNH. e. NHANH
The following Aldol Condensation produces a mixture of SIX -alpha, beta-unsaturated carbonyl products. DRAW the structure of all Six the alpha, beta-unsaturated products obtained.
Which of the following reagents does not add to an alpha, beta-unsaturated ketone in a1, 4 -connieaie addition? HCN (CH_3)CuLi CH_3MgBr CH_3CH_2NH_3 Which structure is the enol form of the compound at the right? Which of the compounds below will undego decarboxylation upon heating? 3 only 1 and 3 2 and 3 2, 3, and 4 Which compound cannot form a lactone?
5) Draw the Structure of ALL the alpha/beta unsaturated carbon obtained as the dehydration products from the following aldol cond ůco + nsaturated carbonyl products that would be he following aldol condensation: NaOEt 6) The Aldol Condensation below provides only ONE PRODUCT. Provide the structure of the Aldol Dehydration Product and a Full Mechanism to account for its formation. C. –
4. Provide a complete curved-arrow mechanism for each of the following transformations involving conjugate addition Note that no stereochemistry is shown or implied in any of these reactions, and you may neglect it in your mechanisms as well. a. For this mechanism, you may assume that the reagent NaBH.CN behaves just like NaBHs, and that it preferentially performs 1,4-addition to unsaturated carbonyl compounds. O ! OME OMe H 1. NaOE, ETOH 2. NaBH CN, MOH oMe ОMe OME OME EtOXOE...
Explain
5. Which of the following underlined alpha hydrogens are the most acidic? A) ping underlined alpha hydroul it muc stalde. B) Section: 17-1 Section: 17-1 E) D) CH3-CH O CH3-C-CH2-CH CH3-C-CH2-C-OCH 3 CH3-C-CH3 CH3-C-0-CH3 11.
2) Which of the following underlined alpha hydrogens are the most acidic? A) 0 CH3-CH B) CH3-C-CH2C-OCH3 C) CH3-C-CH2 CH D) CH3-C-O-CH3 E) CH3-C-CH3
Understand alpha helices and beta pleated sheets Question Which of the following statements is not true about R groups in B-pleated sheet? a. The R groups of the peptide chain point outside. b. The R groups are attached to the carbons and extend above and below the folds of the pleat. c. The amino acids tend to have smaller R groups. Select the correct answer below: a and b a and c b and c only a FEEDBACK MORE INSTRUCTION...
Most questions answered within 3 hours.
-
1) Who is a Hispanic consumer?
2) Who is a Latin consumer?
3) Are Hispanic and...
asked 8 minutes ago -
Rod figures that it takes an average (mean) of =20 minutes with
a standard deviation of...
asked 26 minutes ago -
You have 5 ul of a pure (undiluted) culture at a concentration
of 3.6 x 106...
asked 30 minutes ago -
______ activity indicates the presence of an electron transport
chain.
1- gelatinase 2- oxidase 3- caseinase...
asked 33 minutes ago -
The molarity of a silver nitrate solution is 0.192 M. How many
grams of silver ions...
asked 46 minutes ago -
Which of the following solutes will produce a greater increase
in boiling point when it is...
asked 42 minutes ago -
true or false: Series connected electrical circuit is a voltage
divider, and voltage of each device...
asked 37 minutes ago -
A 100-W lightbulb has a resistance of about 12 Ω when cold (20
∘C) and 128...
asked 41 minutes ago -
For the asset shown in the following table, use the capital
asset pricing model to find...
asked 42 minutes ago -
If the impulse response of a circuit is a pulse y(t) = u(t) –
u(t-T), T...
asked 48 minutes ago -
Eukaryotic cells have __ which is similar to prokaryotes of
Archaea.
A Ester-linked membrane lipids
B...
asked 58 minutes ago -
true or false. If work is done on a system by it's
surroundings, its value is...
asked 1 hour ago