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Which of the following structures can be classified as aromatic?  

Predict the splitting pattern you would observe for the proton at C3 of 2,3-dimethyl-2-phenylbutane.

Provide a stepwise synthesis for the following.          he 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.

Compound X has a molecular formula C8H10 and gives the 1H NMR spectrum below. What is the structure of X?

Which of the following compounds will have odd m/z value for the molecular ion?

Which of the following would most readily react with a strong base, such as NaNH2, to form a carbanion?

Which of the molecules gives rise to a molecular ion with an odd value of m/z?

Which of the followings compounds matches the below IR spectrum?  

Provide the structure for N-phenyl-N-propyl-2,3-dimethylbutanamide?

An unknown compound X has the molecular formula C6H14O. Compound X shows a peak in its IR spectrum at 3200-3600 cm-1. The 1H NMR spectral data for compound X is given below. What is the structure of compound X?