how to find the major product of a reaction?

[ayudar]

hey. im in my 2nd week of orgo i and i got a test coming up soon and i am having trouble with this question:

http://i.imgur.com/YCaU255.png
(it's a safe link. dw)


Anyways, the answer is A but i don't understand why. what makes B not a major product and what exactly is a major product??? (we are in the second chapter of our textbook but it doesn't go into major products... only functional groups and IR).

I am only in my second week of orgo so i don't have much knowledge so could you really make your explanation kind of simple.

thank you in advance,
a struggling sophomore.

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[anticarbon]

I am throwing my idea out there, but not 100% sure.

For one thing, A is less hindered to take the H+ since it has bent instead of trigonal pyramidal atomic geometry.

Secondly, electron-rich double bond on N allows stabler positive charge on nitrogen.

 

[Schenker]

Look at which product is most stable. Product A is resonance stabilized; B is not.

 

[gettheleadout]

Homework questions are not permitted in MCAT Q&A.