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

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(I) > (II) > (III) > (IV)

(I)>(IV)>(III)>(II)

(IV)>(III)>(II)>(I)

(II)>(III)>(IV)>(I)

answer is B.

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Detailed Solution

Nucleophilic addition (NA) reaction is favoured by EWG, or easy leaving group or the acidic alkyne in this case.

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