Question

Give the reactivity in the decreasing order of the following alkynes towards nucleophilic addition reaction with `MeO^(Θ)//MeOH`.
(I) (II) `Me--=-Me`
(III) `Me--=-H` (IV) `H--=-H`
A. (a) `(I)gt(II)gt(III)gt(IV)`
B. (b) `(I)gt(IV)gt(III)gt(II)`
C. (c) `(IV)gt(III)gt(II)gt(I)`
D. (d) `(II)gt(III)gt(IV)gt(I)`

Answer 1

Correct Answer - B
Nucleophilic addition (NA) reaction is favoured by EWG, so the answer is (b).