Question

nucleophilic substitution will be fastest in case of
Choose the correct answer:
O (a) 1-Chloro-2,2-dimethyl propane
O (b) 1-lodo-2,2-dimethyl propane
O (c) 1-Bromo-2,2-dimethyl propane
O (d) 1-Fluoro-2,2-dimethyl propane
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Answer 1

nucleophilic substitution will be fastest in case of

Choose the correct answer:

O (a) 1-Chloro-2,2-dimethyl propane

O (b) 1-lodo-2,2-dimethyl propane

O (c) 1-Bromo-2,2-dimethyl propane

O (d) 1-Fluoro-2,2-dimethyl propane

O (b) 1-lodo-2,2-dimethyl propane.

nucleophilic substitution will be fastest in case of 1-lodo-2,2-dimethyl propane.

Nucleophilic substitution reactions are a class of reactions in which an electron rich nucleophile attacks a positively charged electrophile to replace a leaving group.  Since water is a nucleophile, an aqueous solvent system leads to the undesired reaction of water (instead of alginate) with the reactive electrophile.