A ketone reacted with C2 H3 MgBr reagent followed by hydrolysis gave a product which on dehydrat

step 1 A ketone reacted with the C2H3 MGBR reagent, followed by Hydrolysis, gave a product which on deh

A ketone reacted with C2 H3 MgBr reagent followed by...

A ketone reacted with $\mathrm{C}_{2} \mathrm{H}_{3} \mathrm{MgBr}$ reagent followed by hydrolysis gave a product which on dehydration gives an alkene. The alkene on ozonolysis gives (a) diethyl ketone and acetaldehyde (b) dimethyl ketone and formaldehyde (c) ethyl methyl ketone and propionaldehyde (d) none of these

A ketone reacted with $\mathrm{C}_{2} \mathrm{H}_{3} \mathrm{MgBr}$ reagent followed by hydrolysis gave a product which on dehydration gives an alkene. The alkene on ozonolysis gives
(a) diethyl ketone and acetaldehyde
(b) dimethyl ketone and formaldehyde
(c) ethyl methyl ketone and propionaldehyde
(d) none of these

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Key Concepts

Grignard Reaction

The Grignard reaction involves the nucleophilic addition of an organomagnesium halide reagent to carbonyl compounds. The carbon atom bonded to magnesium acts as a strong nucleophile that attacks an electrophilic carbonyl carbon, forming an alkoxide intermediate that is typically converted into an alcohol upon hydrolysis. This reaction is fundamental for forming new carbon–carbon bonds in organic synthesis.

Dehydration Reaction

Dehydration of alcohols is an elimination reaction in which water is removed, generally under acidic conditions, to form alkenes. This transformation often proceeds via an E1 mechanism, especially for tertiary alcohols, by generating a carbocation intermediate before the loss of a proton leads to the formation of a double bond. It provides a key method for synthesizing alkenes from alcohol precursors.

Ozonolysis Reaction

Ozonolysis is a reaction used to cleave alkenes by treatment with ozone, leading to the formation of carbonyl compounds such as aldehydes and ketones. The process involves the formation of unstable intermediates that decompose to yield the final carbonyl products. This reaction is widely utilized in organic synthesis for the oxidative cleavage of double bonds and structural analysis of alkenes.

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