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Using IR spectroscopy, how can you tell the difference between a ketone and an aldehyde?

An ylide is a molecule that can be described as a ________.

Bonus question 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.

Which of the following substituents is an ortho, para director?

Which one of the following substituents will not direct the incoming group to the meta position during electrophilic aromatic substitution?

Rank the following compounds in order of increasing reactivity towards chlorination with Cl2/AlCl3 (slowest reacting to fastest).

The compound shown below can form a hemiacetal by reacting with itself in an acidic solution.What is the structure of this hemiacetal?

Which one of the following compounds will be least reactive towards a Friedel-Crafts reaction?

Predict the product, when pentanal reacts with CH3NH2 in the presence of an acid catalyst.

What kind of reactions do aldehydes and ketones undergo?