In 1935, J. Bredt, a German chemist, proposed that a bicycloalkene cannot have a double bond at

Question:

In 1935, J. Bredt, a German chemist, proposed that a bicycloalkene cannot have a double bond at a bridgehead carbon unless one of the rings contains at least eight carbon atoms. This is known as Bredt’s rule. Explain why there cannot be a double bond at this position.

bridgehead carbon