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Which of the following aldehydes does 2-methylbutarial propanal dergo aldol reactions ethanal methanal d Select one:...
21, please help. i dont understand at all. B. propanal c. ethanal D. ethanal E. propanone...
21, please help. i dont understand at all.
B. propanal c. ethanal D. ethanal E. propanone 1 eq 1,2-ethanediol 2 eq ethanol 1 eq 1,2-ethanediol 2 eq methanol 21. Which reactants will make the target product? Target product ? trace HA ANH ave. 22. In which of these reactions does adding acid catalyst not speed up the reaction? (Reagents left off for you to determine.)
NH2 Select one: O a. propanone / H,804 o b. 2-propanol/ H,SO4 o c. ethanal/ H,...
NH2 Select one: O a. propanone / H,804 o b. 2-propanol/ H,SO4 o c. ethanal/ H, SO o d. 1-propanol/H,SO e. propanal/ H,SO4
Which of the following is a characteristic of aldehydes? Select all that apply: a. Aldehydes contain...
Which of the following is a characteristic of aldehydes? Select all that apply: a. Aldehydes contain an oxygen atom. b. Aldehydes have lower boiling points than the corresponding alkanes. c. Aldehydes contain an oxygen atom bound directly to a hydrogen atom. d. The carbonyl group in an aldehyde must be attached to a hydrogen atom.
HW 5 1. Draw all possible products for the base catalyzed reaction of ethanal and propanal....
HW 5 1. Draw all possible products for the base catalyzed reaction of ethanal and propanal. Indicate the new bond formed. (Full: all possible products and correct ID of new bond, partial: 75% of possible products) 2. Draw and label the kinetic and thermodynamic products for reacting the following ketone with LDA. (Full: correct products and labeling, partial: correct products but no labels) 1. LDA 2 CH31 3. Show the mechanism for the following intramolecular reaction. You do NOT need...
In which of the following reactions does CO2 fixation occur Select one: a. Glyceraldehyde Phosphate +...
In which of the following reactions does CO2 fixation occur Select one: a. Glyceraldehyde Phosphate + NADH + ATP to Glucose b. Glyceraldehyde Phosphate + NADH + ATP to Ribulose Phosphate c. all of these d. Ribulose Biphosphate + CO2 to Glyceraldehyde Phosphate
For the following crossed aldol reactions, provide the product 2. For the following crossed aldol reactions,...
For the following crossed aldol reactions, provide the
product
2. For the following crossed aldol reactions, provide the product. (15 pts) 2. LDA 2. Me MeMe Me Me 3.H+ 1. LDA 2. Me Me 3. H+ 1. LDA 2. MeH 3. H+ 1. LDA H Me Me Me 3. H+ 1. LDA “ и Me Me H Me 3. H+
1. The aldol condensation reaction belongs to a group of reactions characterized by formation of an...
1. The aldol condensation reaction belongs to a group of reactions characterized by formation of an enolate. For each of the following aldehydes or ketones, draw the enolate ion that forms when treated with a strong base such as sodium hydroxide. If an enolate cannot form, put NR (no reaction). 2. The first step in the aldol addition of acetaldehyde is an acid base reaction (proton transfer). pka = 16 pka = 15 OH a. The pk, for each acid...
Which of the following statements about the Aldol reaction is correct. Select all that apply. The...
Which of the following statements about the Aldol reaction is correct. Select all that apply. The aldol condensation reaction requires only a catalytic amount of base to form the a, -unsaturated carbonyl product In an Aldol reaction, the enolate is the electrophile that reacts with a neutral carbonyl nucleophile. Reacting 1 equivalent of LDA (lithium diisopropylamide) with 3-pentanone, the enolate will be formed quantitatively. Two equivalents of a ketone can be reacted with NaOH to form a B-hydroxycarbonyl product. Aldol...
QUESTION 33 2 points ($18.7) What is the product of the following crossed aldol condensation? (Complete...
QUESTION 33 2 points ($18.7) What is the product of the following crossed aldol condensation? (Complete aldol reactions using two different aldehydes or ketones.) Reagents: acetyl aldehyde + p-chlorobenzaldehyde (no alpha hydrogen) + NaOH a strong base + H20 and heat.) HOA o oo QUESTION 34 2 points (518.7) Which compound, in a reaction with the ketone below, would produce the fewest side products? (Identify which aldol reactions will proceed in high yield). Reagents: starting material acetone + (1) NaOH...
Question Completion Status: QUESTION 23 Which of the following statements is true of aldehydes and ketones?...
Question Completion Status: QUESTION 23 Which of the following statements is true of aldehydes and ketones? a. Both aldehydes and ketones are easily oxidized. b. Neither aldehydes nor ketones are easily oxidized. c. Aldehydes are easily oxidized, but ketones cannot be readily oxidized. Od. Ketones are easily oxidized, but aldehydes cannot be readily oxidized QUESTION 24 Which of the following compounds has the lowest boiling point? O a. acetone b. formaldehyde O c 3-octanone d. cyclopentanone QUESTION 25 Anster the...
21, please help. i dont understand at all.
B. propanal c. ethanal D. ethanal E. propanone 1 eq 1,2-ethanediol 2 eq ethanol 1 eq 1,2-ethanediol 2 eq methanol 21. Which reactants will make the target product? Target product ? trace HA ANH ave. 22. In which of these reactions does adding acid catalyst not speed up the reaction? (Reagents left off for you to determine.)
NH2 Select one: O a. propanone / H,804 o b. 2-propanol/ H,SO4 o c. ethanal/ H, SO o d. 1-propanol/H,SO e. propanal/ H,SO4
HW 5 1. Draw all possible products for the base catalyzed reaction of ethanal and propanal. Indicate the new bond formed. (Full: all possible products and correct ID of new bond, partial: 75% of possible products) 2. Draw and label the kinetic and thermodynamic products for reacting the following ketone with LDA. (Full: correct products and labeling, partial: correct products but no labels) 1. LDA 2 CH31 3. Show the mechanism for the following intramolecular reaction. You do NOT need...
In which of the following reactions does CO2 fixation occur Select one: a. Glyceraldehyde Phosphate + NADH + ATP to Glucose b. Glyceraldehyde Phosphate + NADH + ATP to Ribulose Phosphate c. all of these d. Ribulose Biphosphate + CO2 to Glyceraldehyde Phosphate
For the following crossed aldol reactions, provide the
product
2. For the following crossed aldol reactions, provide the product. (15 pts) 2. LDA 2. Me MeMe Me Me 3.H+ 1. LDA 2. Me Me 3. H+ 1. LDA 2. MeH 3. H+ 1. LDA H Me Me Me 3. H+ 1. LDA “ и Me Me H Me 3. H+
1. The aldol condensation reaction belongs to a group of reactions characterized by formation of an enolate. For each of the following aldehydes or ketones, draw the enolate ion that forms when treated with a strong base such as sodium hydroxide. If an enolate cannot form, put NR (no reaction). 2. The first step in the aldol addition of acetaldehyde is an acid base reaction (proton transfer). pka = 16 pka = 15 OH a. The pk, for each acid...
Which of the following statements about the Aldol reaction is correct. Select all that apply. The aldol condensation reaction requires only a catalytic amount of base to form the a, -unsaturated carbonyl product In an Aldol reaction, the enolate is the electrophile that reacts with a neutral carbonyl nucleophile. Reacting 1 equivalent of LDA (lithium diisopropylamide) with 3-pentanone, the enolate will be formed quantitatively. Two equivalents of a ketone can be reacted with NaOH to form a B-hydroxycarbonyl product. Aldol...
QUESTION 33 2 points ($18.7) What is the product of the following crossed aldol condensation? (Complete aldol reactions using two different aldehydes or ketones.) Reagents: acetyl aldehyde + p-chlorobenzaldehyde (no alpha hydrogen) + NaOH a strong base + H20 and heat.) HOA o oo QUESTION 34 2 points (518.7) Which compound, in a reaction with the ketone below, would produce the fewest side products? (Identify which aldol reactions will proceed in high yield). Reagents: starting material acetone + (1) NaOH...
Question Completion Status: QUESTION 23 Which of the following statements is true of aldehydes and ketones? a. Both aldehydes and ketones are easily oxidized. b. Neither aldehydes nor ketones are easily oxidized. c. Aldehydes are easily oxidized, but ketones cannot be readily oxidized. Od. Ketones are easily oxidized, but aldehydes cannot be readily oxidized QUESTION 24 Which of the following compounds has the lowest boiling point? O a. acetone b. formaldehyde O c 3-octanone d. cyclopentanone QUESTION 25 Anster the...
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