(A) The reaction of a ketone with a Grignard reagent $(R'MgX)$ proceeds via nucleophilic addition to the carbonyl group to form an adduct,which upon a

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(A) The reaction of a ketone with a Grignard reagent $(R'MgX)$ proceeds via nucleophilic addition to the carbonyl group to form an adduct,which upon acidic hydrolysis yields a tertiary alcohol.$R_2C=O + R'MgX \rightarrow R_2C(R')(OMgX)$$R_2C(R')(OMgX) + H_2O/H^+ \rightarrow R_2C(R')OH + Mg(OH)X$Thus,the product is a $3^o$ alcohol.

Class 12 Chemistry 8-1.Aldehydes and Ketones Properties

Medium

What product is obtained from the reaction of a Grignard reagent with a ketone?

A
Tertiary alcohol
B
Secondary alcohol
C
Primary alcohol
D
Carboxylic acid

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8-1.Aldehydes and Ketones

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Properties

Paraldehyde is a trimer of which of the following?

Easy

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Which of the following statements is false?

DifficultMHT CET 2012

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Match the examples given in Column $I$ with the name of the reaction in Column $II$ and identify the correct matches.

Column $I$ $(Example)$ Column $II$ $(Reaction)$

$a$. $CH_3COCl + H_2 \xrightarrow{Pd-C/BaSO_4} CH_3CHO$ Stephen's reaction

$b$. $C_6H_5CHO \xrightarrow{NaOH, \Delta} C_6H_5CH_2OH + C_6H_5COO^-Na^+$ Cannizzaro's reaction

$c$. $C_6H_6 + CH_3COCl \xrightarrow{AlCl_3} C_6H_5COCH_3$ Friedel-Crafts acylation

$d$. $R-CH_2-COOH \xrightarrow[H_2O]{Br_2/Red P} R-CH(Br)-COOH$ $HVZ$ reaction

$e$. $CH_3-CN \xrightarrow[\text{(ii) } H_2O/H^+]{\text{(i) } SnCl_2/HCl} CH_3CHO$ Stephen's reaction

$f$. $2 CH_3CHO \xrightarrow[\Delta]{NaOH} CH_3-CH=CHCHO$ Aldol condensation

Column $I$ $(Example)$	Column $II$ $(Reaction)$
$a$. $CH_3COCl + H_2 \xrightarrow{Pd-C/BaSO_4} CH_3CHO$	Stephen's reaction
$b$. $C_6H_5CHO \xrightarrow{NaOH, \Delta} C_6H_5CH_2OH + C_6H_5COO^-Na^+$	Cannizzaro's reaction
$c$. $C_6H_6 + CH_3COCl \xrightarrow{AlCl_3} C_6H_5COCH_3$	Friedel-Crafts acylation
$d$. $R-CH_2-COOH \xrightarrow[H_2O]{Br_2/Red P} R-CH(Br)-COOH$	$HVZ$ reaction
$e$. $CH_3-CN \xrightarrow[\text{(ii) } H_2O/H^+]{\text{(i) } SnCl_2/HCl} CH_3CHO$	Stephen's reaction
$f$. $2 CH_3CHO \xrightarrow[\Delta]{NaOH} CH_3-CH=CHCHO$	Aldol condensation