Give the reactivity in the decreasing order of the following alkynes towards nucleophilic addition reaction with MeOΘ/MeOH.
(I)
(II) Me−≡Me
(III) Me−≡−H
(IV) H−≡−H
(I) > (II) > (III) > (IV)
(I)>(IV)>(III)>(II)
(IV)>(III)>(II)>(I)
(II)>(III)>(IV)>(I)
Nucleophilic addition (NA) reaction is favoured by EWG, or easy leaving group or the acidic alkyne in this case.