Question

Remote double bonds, (double bonds out in the middle of long chains) are more commonly prepared by Wittig reactions rather than by elimination. Explain. Example:

Answer 1

Remote double bonds (double bonds out in que middle of long chowo) one more commonly prepared by Witting reaction rather them by elimination. Explain. Example writting reaction in Lalay** trases us – HC = pphez Porwerrd '+ (phap-he-CH₂-Cely - CH3 opphz a CH-Celzelz-CH3 Here in wittig reaction only one type alkene is formed, mo.chance to lof forming omothor isomerie arkene from these two recictents Elumination OH Com OH so, this alkene meng he formed from these two types alcohol If we take 6 - we came can get- old + OH2 H H H

+ 801 504. so we can't get 100% despred product, how of 3 is taken then H H H4 OH GOH2 + 50- 80%. pain in this case also we don't get 1006. product so, elimination is rarely used for preparing the remote double bond. So Wiltig reaction is more preferable then elimination reaction to prepare remote double bond.