Which of the following reaction sequences would be the best for the synthesis of $2$-pentanone?
- A$CH_3-CH_2-CH_2-CHO$ $\xrightarrow[Et_2O]{CH_3MgI}$ $\xrightarrow{H_3O^{+}}$
- B$CH_3-CH(O)CH_2-CH_2$ $\xrightarrow[Et_2O]{CH_3MgI}$ $\xrightarrow{H_3O^{+}}$
- C$CH_3-CH_2-CH_2-CN$ $\xrightarrow[Et_2O]{CH_3MgI}$ $\xrightarrow{H_3O^{+}}$
- D$CH_3-CH_2-CHO$ $\xrightarrow[Et_2O]{CH_3MgI}$ $\xrightarrow{H_3O^{+}}$
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Similar Questions
Which of the following reactions cannot be used to prepare Benzaldehyde?
Medium
View SolutionThe major products $P$ and $Q$ in the following reactions are:
$C_6H_5-CH=NOH$ $\xrightarrow{(i) (CH_3CO)_2O} P$ $\xrightarrow{(i) CH_3MgI, (ii) H_3O^+} Q$
$C_6H_5-CH=NOH$ $\xrightarrow{(i) (CH_3CO)_2O} P$ $\xrightarrow{(i) CH_3MgI, (ii) H_3O^+} Q$
DifficultTS EAMCET 2020
View SolutionIdentify the product $A$ in the following reaction:
$CH_3-CCl_2-CH_2-CH_3 + 2KOH_{(aq)} \xrightarrow{\Delta} A + 2KCl + H_2O$
$CH_3-CCl_2-CH_2-CH_3 + 2KOH_{(aq)} \xrightarrow{\Delta} A + 2KCl + H_2O$
Identify the product $Y$ in the following series of reactions.
$4-$Nitrotoluene $\xrightarrow[(CH_3CO)_2O / CrO_3]{273-278 \ K} X$ $\xrightarrow{H_3O^{+} / \Delta} Y$
$4-$Nitrotoluene $\xrightarrow[(CH_3CO)_2O / CrO_3]{273-278 \ K} X$ $\xrightarrow{H_3O^{+} / \Delta} Y$
DifficultMHT CET 2020
View SolutionThe reagents used in the Etard reaction $(I)$ and the Stephen reaction $(II)$ are:
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