What is the major product after addition of two HF to propyne,CH₃C≡CH? A)CH₃CHFCH₂F B)CH₂FCH₂CH₂F C)CH₃CF₂CH₃ D)CH₃CH₂CF₂H E)CH₃CHF=CH₂

Question

Quizplus · Accepted Answer

Propyne (CH≡CC≡CH) reacts with two molecules of HF in the presence of a catalyst like SbF5 to give the major product as 1,1,1,3,3-pentafluoropropane (CF3CH2CH2F). The reaction proceeds through the formation of carbocation intermediates, which undergo rearrangement and attack by a fluoride ion to give the final product. Therefore, the correct product for the addition of two HF to propyne is CHF2CHFCH2CHF2. The given options A, B, D, and E do not represent the correct product. Option C represents the correct product by the addition of two HF to propyne.

What Is the Major Product After Addition of Two HF