Draw a suitable mechanism for the following reaction.
(Note: replacing the nitrogen atom with –CH– slows down the reaction)

Stepwise mechanism of cumulative substitution and elimination reaction.

Alternative mechanism for cumulative substitution and elimination reaction.

Detailed mechanism of cumulative substitution and elimination reaction.

Another stepwise mechanism for cumulative substitution and elimination reaction.

Draw a suitable mechanism for the following reaction.(Note: replacing the nitrogen atom with –CH– slows down the reaction)