Propanone reacts with CH3MgBr in dry ether, followed by hydrolysis, to give A. A is heated with conc. H2SO4 to give B. B reacts with HBr in the absence of peroxide to give C. C is

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Propanone reacts with $CH X_{3} MgBr$ in dry ether, followed by hydrolysis, to give A. A is heated with conc. $H X_{2} SO X_{4}$ to give B. B reacts with HBr in the absence of peroxide to give C. C is

A2-bromo-2-methylpropane
B1-bromo-2-methylpropane
C2-bromobutane
D1-bromobutane

Answer: A

A is 2-methylpropan-2-ol and B is 2-methylpropene, formed by dehydration. HBr adds by Markovnikov's rule (no peroxide), placing Br on the more substituted carbon:

(CH X_{3}) X_{3} CBr

, 2-bromo-2-methylpropane.

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Propanone reacts with CHX3​MgBr in dry ether, followed by hydrolysis, to give A. A is heated with conc. HX2​SOX4​ to give B. B reacts with HBr in the absence of peroxide to give C. C is

Answer: A

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Propanone reacts with $CH X_{3} MgBr$ in dry ether, followed by hydrolysis, to give A. A is heated with conc. $H X_{2} SO X_{4}$ to give B. B reacts with HBr in the absence of peroxide to give C. C is