285590
Which of the following compounds undergohaloform reaction?
1 \(\mathrm{CH}_3 \mathrm{COCH}_3\)
2 HCHO
3 \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\)
4 \(\mathrm{CH}_3-\mathrm{O}-\mathrm{CH}_3\)
Explanation:
(a) The compounds which have
Aldehydes, Ketones and Carboxylic Acids
C-85
group can undergo haloform reactions. Thus, acetone \(\left(\mathrm{CH}_3 \mathrm{COCH}_3\right)\) undergoes haloform reaction.
Karnataka CET 2018
CHEMISTRY(KCET)
285591
The appropriate reagent for the following transformation is
(b)
Both \(\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}\) and \(\mathrm{NH}_2 \mathrm{NH}_2, \mathrm{OH}^{-}\)can reduce.
\(>\mathrm{C}=\mathrm{O} \rightarrow\) CH2 group but in case of \(\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}\), HCl will bring about substitution of \(\mathrm{OH}^{-}\)by \(\mathrm{Cl}^{-}\). Therefore, the most effective reagent is \(\mathrm{NH}_2 \mathrm{NH}_2\), \(\mathrm{OH}^{-}\).
Karnataka CET 2018
CHEMISTRY(KCET)
285592
In the following reaction,
\(\xrightarrow[\mathrm{CS}_2]{\mathrm{CrO}_3 \mathrm{Cl}_2} \mathrm{X} \xrightarrow{\mathrm{C}_3 \mathrm{O}^{+}} \mathrm{Z}\)
the compound \(Z\) is
285590
Which of the following compounds undergohaloform reaction?
1 \(\mathrm{CH}_3 \mathrm{COCH}_3\)
2 HCHO
3 \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\)
4 \(\mathrm{CH}_3-\mathrm{O}-\mathrm{CH}_3\)
Explanation:
(a) The compounds which have
Aldehydes, Ketones and Carboxylic Acids
C-85
group can undergo haloform reactions. Thus, acetone \(\left(\mathrm{CH}_3 \mathrm{COCH}_3\right)\) undergoes haloform reaction.
Karnataka CET 2018
CHEMISTRY(KCET)
285591
The appropriate reagent for the following transformation is
(b)
Both \(\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}\) and \(\mathrm{NH}_2 \mathrm{NH}_2, \mathrm{OH}^{-}\)can reduce.
\(>\mathrm{C}=\mathrm{O} \rightarrow\) CH2 group but in case of \(\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}\), HCl will bring about substitution of \(\mathrm{OH}^{-}\)by \(\mathrm{Cl}^{-}\). Therefore, the most effective reagent is \(\mathrm{NH}_2 \mathrm{NH}_2\), \(\mathrm{OH}^{-}\).
Karnataka CET 2018
CHEMISTRY(KCET)
285592
In the following reaction,
\(\xrightarrow[\mathrm{CS}_2]{\mathrm{CrO}_3 \mathrm{Cl}_2} \mathrm{X} \xrightarrow{\mathrm{C}_3 \mathrm{O}^{+}} \mathrm{Z}\)
the compound \(Z\) is
285590
Which of the following compounds undergohaloform reaction?
1 \(\mathrm{CH}_3 \mathrm{COCH}_3\)
2 HCHO
3 \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\)
4 \(\mathrm{CH}_3-\mathrm{O}-\mathrm{CH}_3\)
Explanation:
(a) The compounds which have
Aldehydes, Ketones and Carboxylic Acids
C-85
group can undergo haloform reactions. Thus, acetone \(\left(\mathrm{CH}_3 \mathrm{COCH}_3\right)\) undergoes haloform reaction.
Karnataka CET 2018
CHEMISTRY(KCET)
285591
The appropriate reagent for the following transformation is
(b)
Both \(\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}\) and \(\mathrm{NH}_2 \mathrm{NH}_2, \mathrm{OH}^{-}\)can reduce.
\(>\mathrm{C}=\mathrm{O} \rightarrow\) CH2 group but in case of \(\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}\), HCl will bring about substitution of \(\mathrm{OH}^{-}\)by \(\mathrm{Cl}^{-}\). Therefore, the most effective reagent is \(\mathrm{NH}_2 \mathrm{NH}_2\), \(\mathrm{OH}^{-}\).
Karnataka CET 2018
CHEMISTRY(KCET)
285592
In the following reaction,
\(\xrightarrow[\mathrm{CS}_2]{\mathrm{CrO}_3 \mathrm{Cl}_2} \mathrm{X} \xrightarrow{\mathrm{C}_3 \mathrm{O}^{+}} \mathrm{Z}\)
the compound \(Z\) is
285590
Which of the following compounds undergohaloform reaction?
1 \(\mathrm{CH}_3 \mathrm{COCH}_3\)
2 HCHO
3 \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\)
4 \(\mathrm{CH}_3-\mathrm{O}-\mathrm{CH}_3\)
Explanation:
(a) The compounds which have
Aldehydes, Ketones and Carboxylic Acids
C-85
group can undergo haloform reactions. Thus, acetone \(\left(\mathrm{CH}_3 \mathrm{COCH}_3\right)\) undergoes haloform reaction.
Karnataka CET 2018
CHEMISTRY(KCET)
285591
The appropriate reagent for the following transformation is
(b)
Both \(\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}\) and \(\mathrm{NH}_2 \mathrm{NH}_2, \mathrm{OH}^{-}\)can reduce.
\(>\mathrm{C}=\mathrm{O} \rightarrow\) CH2 group but in case of \(\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}\), HCl will bring about substitution of \(\mathrm{OH}^{-}\)by \(\mathrm{Cl}^{-}\). Therefore, the most effective reagent is \(\mathrm{NH}_2 \mathrm{NH}_2\), \(\mathrm{OH}^{-}\).
Karnataka CET 2018
CHEMISTRY(KCET)
285592
In the following reaction,
\(\xrightarrow[\mathrm{CS}_2]{\mathrm{CrO}_3 \mathrm{Cl}_2} \mathrm{X} \xrightarrow{\mathrm{C}_3 \mathrm{O}^{+}} \mathrm{Z}\)
the compound \(Z\) is