Question

2. (a) Indicate the correct ranking of the relative stabilities of the alkenes shown below, by typing in the letters under each structure in the correct order (most stable first, least stable last).

Answer 1

Aowlange given alkenes in order of stability, Given alkenes can be arranged an stability order a the basis of hyperconjugation. In case of hubera - njugation more substituted alkene is stable. This is on the basis of Saytreff rule According to saytreff rule; more substituted alkene or group is more stable In actuce it is due to the fact in more substituted alkena there is more no. of x-H. More the mo, at L-H, more will be the hyper conjugation and more will be the stability. and a-H c.] la-c is the casken is the hydregen too(a); y fer (0), 6yt attached to alkene attached to that a no. of x-H 27 moi of x-HEIL Od for (c); to mo. of x-H = 1 for (d); no. of & -H = 3 C -C बेटी बचाओ बेटी पढ़ाओ

Inderdhanush Page : Date: 77 mo. of x-H - 7 for (e); Ca-c liven alkenes wis order of having X-H; L (6) > (e) = (a) (d) > (c) ( 1H) (72 H = (1 H) > (3H) > 1H This connect ranking of relative stabilites of giren alkenes; (b) > (e) = (2)> [d)> (c) |
Given alkenes have been arranged in order of relative stability of given alkenes on the basis of number of alpha hydrogen.