Question

luck!! urtiss Question 4 4 pts Which of the following alkenes of the formula CsHao would you expect to be the least stable? о не е

Answer 1

We can see, structure number 5 is tri substituted i.e. around double bond, three methoxy group is present. so it is a stable structure.

си, 1) см; с –с си, из 2- из БИ сх. — из си Сиз

Structure numbers, 1,2, and 3 are di substituted structures, i.e. two alkane groups are present around the double bond, so these are also stable.
structure number 4 is only a mono-substituted structure, so it is the least stable structure and the answer to the question is structure number 4.

the concept used here is that if the structure of carbon is more substituted around the double bond, it is more stable.