Acetyl chloride undergoes nucleophilic acyl substitution faster than methyl acetate because

A compound with molecular formula C8H14O4 exhibits a triplet at δ 1.3 (I=6), a singlet at δ 2.6 (I=4) and a quartet at δ 4.2 (I=4) in its 1HNMR spectrum. Its IR spectrum shows a strong absorption band near 1740 cm-1. What is the structure for this compound?

Which of the following compounds cannot serve as a Michael acceptor?

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.

Rank the following compounds in order of increasing acidity, putting the least acidic first.

What is the first step in the general mechanism for nucleophilic acyl substitution?

Which one of the following reagents converts a carboxylic acid to an acyl chloride as shown below?

What is the product of the following intramolecular aldol condensation reaction?

Predict the product for the following reaction.     

Which one of the following would not be expected to give a significant yield in a Dieckmann condensation?