Estimate how a TLC-analysis would look like for the following reaction when you take a TLC at: a) the start of the reaction, b) after 65% conversion and c) after full conversion of A. (You may assume that A-C separate on the TLC-plate)
I am having a very difficult time understand how you can determine which compound is more polar by just looking at the structure. I don't know what to look at or what to prioritize.
When attempting to answer this question I assumed that B would be more polar (why: because it contains a nitrogen which is more electronegative than oxygen). So B should be closest to the baseline and A should be further away. What I then thought was that C should be in between A and B because the reaction reacts something polar and something less polar. This was not correct. Our professor drew the TLC-analysis like this:
And I don't really understand how I can determine that the product is more polar than both of the reactants. Is it because it contains both an oxygen and a nitrogen?
I would truly appreciate it if someone could give me some general rules or steps to follow to easily determine the polarity of different compounds.