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Which of the following is a keto-enol tautomeric pair?

Bonus question Provide an efficient stepwise synthesis for the following.          The answer should be entered as in the following example: (this is an example!) 1. NaNH2   2. CH3CH2Br   3. H2, Lindlar’s Cat.    4. BH3, THF   5. H2O2, NaOH                          (Keep three spaces between each step) All chemicals and reagents  structures should be correct and with the proper sequence. No partial credit.

Provide the reagents necessary to prepare the following compound starting with ethyl acetoacetate.

Which of the following carbonyl compounds does not undergo Aldol addition reactions when treated with aqueous sodium hydroxide?

Bonus question Identify the compound (C4H8O) that gives the following 1H NMR spectrum.

Bonus question Provide an efficient stepwise synthesis for the following.       The answer should be entered as in the following example: (this is an example!) 1. NaNH2   2. CH3CH2Br   3. H2, Lindlar’s Cat.    4. BH3, THF   5. H2O2, NaOH                          (Keep three spaces between each step) All chemicals and reagents  structures should be correct and with the proper sequence. No partial credit.

Which is the thermodynamic enolate of 2-methylcyclohexanone?

Consider the following spectrum of a carboxylic acid derivative. This spectrum indicates the presence of a ___________group.

Rank the following three carboxylic acids in order of increasing acidity.I.   4-chlorobutanoic acid    II.   3-chlorobutanoic acid   III.   2-chlorobutanoic acid

What is the characteristic reaction of carboxylic acid derivatives?