Question

I. Give the products of the following:


II. Which has faster rate of `SN^(-1)`?

III. Which has faster rate of `SN^(-1)`?

IV. Give the decreasing order of:


Show the mechanism for the fromation of there products and sub-products.

Explain teh formtaion and mechanism.
VII. Explain wheter these reactions would follow the `SN^(-1)` or `SN^(-2)` and which is faster.

VIII. What are the products of the following reactions?


IXgt a. This reacation gives three subtituion products. Show teh structure.

b. Which has faster rate?

X. GIve teh products of the following:

XI. Which is more reactive towards acid-catalysed hydration and explain the regiochemistry of the alchohol formed.

XII. Which hydrolyses at faster rate?

Answer 1

a. `Br` is bonded to `3^(@) C` atom and not so strong base. It will proceed by `SN^(1)//El. SN` reaction prefominate. `El` follows Sayzelf rule.

II.
III.
IV. a. `(IV) gt (I) gt (II) gt (III)` (stability of `C^(o+)`) `(SN^(-1))`
b. `underset(1^(@))((II)) gt underset(1^(@))((I)) gt underset(1^(@))((III)) gt underset(2^(@))((IV)) (SN^(2))`
V.
VII. `RX (i^(o+))`, strong `Nu^(ᶱ), SN^(2)`,
`(II)` is faster than `(I)` because mesylate ion (``^(o)OSO_(2)CH_(3))` is a better leaving group than Cl^(o)`
b. `RX` is `3^(@), SN^(-1)`.
`(II)` is faster than `(I)` because `I^(ᶱ)` is a better leaving group than `Br^(-o)`.
VIII.
IXgt a. Leaving group at `2^(@)C` and `Nu^(ᶱ)` is weak: `)(SN^(-1))`: Intermediate is (allylic `2^(@) C^(o+)`):

b. `(II)` is faster due to unihdered `N` atom (less stertic hindrance).
X.
d. No reaction, vinylic `C^(o+)` does not react.

XI. a. `(II)` is more reactive

XII.