Have an account?
Skip to Content
10 questions
Show Answers
See Preview
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is not correct?
Tautomers are constitutional isomers.
Tautomers rapidly interconvert.
The enol form is generally more stable.
Tautomerization is catalyzed by both acids and bases.
All of the answers are correct with respect to tautomers
- Multiple ChoicePlease save your changes before editing any questions.
Examine the following generalized structure. It represents
the acid catalyzed intermediate between an keto and enol tautomer.
the base catalyzed intermediate between an keto and enol tautomer.
one of the resonance forms of the acid catalyzed intermediate between an keto and enol tautomer.
one of the resonance forms of the base catalyzed intermediate between an keto and enol tautomer.
- Multiple ChoicePlease save your changes before editing any questions.
Consider the following molecular model. Atoms other than carbon and hydrogen are labeled. Bromination of the substance represented would be dependent on the concentration of:
ketone
acid
halogen
ketone and acid
ketone and halogen
- Multiple ChoicePlease save your changes before editing any questions.
The alkyl halide that should be used to produce octanoic acid via the malonic ester synthesis is:
1-bromooctane
1-bromohexane
1-bromopentane
1-bromodecane
1-bromoundecane
- Multiple ChoicePlease save your changes before editing any questions.
Using the acetoacetic ester synthesis, to produce 5-methyl-2-heptanone, the alkyl halide that should be used is:
1-bromo-2-methylpentane
1-bromo-2-methylnonane
1-bromo-2-methylbutane
1-bromo-2-methyldecane
1-bromo-5-methylheptane
- Multiple ChoicePlease save your changes before editing any questions.
The following substance is produced using acetoacetic ester synthesis. Atoms other than carbon and hydrogen are labeled. Which of the following regions of an IR spectrum could be used to monitor the progress of the reaction?
2850 - 29060 cm–1
2500 - 3100 cm–1
1670 - 1780 cm–1
500 - 600 cm–1
Either 1670 - 1780 cm–1 or 500 - 600 cm–1
- Multiple ChoicePlease save your changes before editing any questions.
Which of the hydrogen atoms indicated by a number is the most acidic in the structure below? Atoms other than carbon and hydrogen are labeled.
1
2
3
4
- Multiple ChoicePlease save your changes before editing any questions.
The starting material A in this reaction sequence is called _____.
a β-keto ester
an α-carboethoxy ketone
a malonic ester
an acetoacetic ester
- Multiple ChoicePlease save your changes before editing any questions.
Conversion of A into B is a type of reaction termed _____.
an acylation
an enolation
an alkylation
a phenylation
- Multiple ChoicePlease save your changes before editing any questions.
Compound X, diethyl propanedioate, is more commonly known as _____.
ethyl acetoacetate
acetoacetic ester
oxalic ester
malonic ester