Elimination reaction [closed]








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In this question i understand that we have to break C- N bond. But which one to choose?[![enter image description here](https://i.stack.imgur.com/ke0Y5.jpg)](https://i.stack.imgur.com/ke0Y5.jpg)




This is an example of **Cope Elimination** where the base takes up hydrogen from the least sterically hindered Carbon atom to avoid crowding in the Transition state. Hence, Hoffman Alkene is obtained and **ethene** is formed. 


The reaction is not an example of E1cb since the Leaving Group is a stable alkene whereas the basic requirement for a reaction to be categorised as E1cb is that the leaving group should be a weak base.


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