232009
In the reactions \(\mathrm{B} \xrightarrow{\text { Lindlar catalyst }+\mathrm{H}_2} \mathrm{RC} \equiv \mathrm{CR} \xrightarrow{\mathrm{Na} / \mathrm{NH}_3} \mathrm{~A}\) $A$ and $B$ are geometrical isomers. Then
1 $\mathrm{A}$ is cis and $\mathrm{B}$ is trans
2 $\mathrm{A}$ is trans and $\mathrm{B}$ is cis
3 $\mathrm{A}$ and $\mathrm{B}$ are cis
4 A and B are trans
Explanation:
Lindlar catalyst are heterogeneous catalysts whose function to obtain an alkene from an alkyne. Reaction of an alkyne with a solution of an alkali metal in liquid ammonia gives a trans alkene.
A.P. EAMCET (Medical) - 2007
GENERAL ORGANIC CHEMISTRY
232012
The configuration of the compound
1 $\mathrm{R}$
2 $\mathrm{S}$
3 $\mathrm{Z}$
4 $\mathrm{E}$
Explanation:
The configuration of the compound is (R).
AMU-2017
GENERAL ORGANIC CHEMISTRY
232016
For the following conversion, reagent/reagents $(\mathrm{A})$ is/are
1 $\mathrm{OsO}_{4}$
2 $\mathrm{O}_{3}$
3 $\mathrm{I}_{2}$ and silver acetate under wet condition
4 Peracid following by acid hydrolysis.
Explanation:
(D) : and enantiomer hydroxylation with peroxy acid is carried out by allowing alkenes to stands with the mixture of $\mathrm{H}_{2} \mathrm{O}_{2}$ and formic acid or benzoic acid for a few hours and then heating the product with $\mathrm{H}_{2} \mathrm{O}$ to Hydrolyse the intermediate.
AMU-2013
GENERAL ORGANIC CHEMISTRY
232018
Products of the reaction, are
1 Meso-compounds
2 Racemic mixtures
3 Mixtures of racemic and meso-compounds
4 None of the above
Explanation:
Cis-2 butene on reaction with bromine gives only racemic 2,3-dibromobutane Racemic-2, 3-Dibromobutane
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GENERAL ORGANIC CHEMISTRY
232009
In the reactions \(\mathrm{B} \xrightarrow{\text { Lindlar catalyst }+\mathrm{H}_2} \mathrm{RC} \equiv \mathrm{CR} \xrightarrow{\mathrm{Na} / \mathrm{NH}_3} \mathrm{~A}\) $A$ and $B$ are geometrical isomers. Then
1 $\mathrm{A}$ is cis and $\mathrm{B}$ is trans
2 $\mathrm{A}$ is trans and $\mathrm{B}$ is cis
3 $\mathrm{A}$ and $\mathrm{B}$ are cis
4 A and B are trans
Explanation:
Lindlar catalyst are heterogeneous catalysts whose function to obtain an alkene from an alkyne. Reaction of an alkyne with a solution of an alkali metal in liquid ammonia gives a trans alkene.
A.P. EAMCET (Medical) - 2007
GENERAL ORGANIC CHEMISTRY
232012
The configuration of the compound
1 $\mathrm{R}$
2 $\mathrm{S}$
3 $\mathrm{Z}$
4 $\mathrm{E}$
Explanation:
The configuration of the compound is (R).
AMU-2017
GENERAL ORGANIC CHEMISTRY
232016
For the following conversion, reagent/reagents $(\mathrm{A})$ is/are
1 $\mathrm{OsO}_{4}$
2 $\mathrm{O}_{3}$
3 $\mathrm{I}_{2}$ and silver acetate under wet condition
4 Peracid following by acid hydrolysis.
Explanation:
(D) : and enantiomer hydroxylation with peroxy acid is carried out by allowing alkenes to stands with the mixture of $\mathrm{H}_{2} \mathrm{O}_{2}$ and formic acid or benzoic acid for a few hours and then heating the product with $\mathrm{H}_{2} \mathrm{O}$ to Hydrolyse the intermediate.
AMU-2013
GENERAL ORGANIC CHEMISTRY
232018
Products of the reaction, are
1 Meso-compounds
2 Racemic mixtures
3 Mixtures of racemic and meso-compounds
4 None of the above
Explanation:
Cis-2 butene on reaction with bromine gives only racemic 2,3-dibromobutane Racemic-2, 3-Dibromobutane
232009
In the reactions \(\mathrm{B} \xrightarrow{\text { Lindlar catalyst }+\mathrm{H}_2} \mathrm{RC} \equiv \mathrm{CR} \xrightarrow{\mathrm{Na} / \mathrm{NH}_3} \mathrm{~A}\) $A$ and $B$ are geometrical isomers. Then
1 $\mathrm{A}$ is cis and $\mathrm{B}$ is trans
2 $\mathrm{A}$ is trans and $\mathrm{B}$ is cis
3 $\mathrm{A}$ and $\mathrm{B}$ are cis
4 A and B are trans
Explanation:
Lindlar catalyst are heterogeneous catalysts whose function to obtain an alkene from an alkyne. Reaction of an alkyne with a solution of an alkali metal in liquid ammonia gives a trans alkene.
A.P. EAMCET (Medical) - 2007
GENERAL ORGANIC CHEMISTRY
232012
The configuration of the compound
1 $\mathrm{R}$
2 $\mathrm{S}$
3 $\mathrm{Z}$
4 $\mathrm{E}$
Explanation:
The configuration of the compound is (R).
AMU-2017
GENERAL ORGANIC CHEMISTRY
232016
For the following conversion, reagent/reagents $(\mathrm{A})$ is/are
1 $\mathrm{OsO}_{4}$
2 $\mathrm{O}_{3}$
3 $\mathrm{I}_{2}$ and silver acetate under wet condition
4 Peracid following by acid hydrolysis.
Explanation:
(D) : and enantiomer hydroxylation with peroxy acid is carried out by allowing alkenes to stands with the mixture of $\mathrm{H}_{2} \mathrm{O}_{2}$ and formic acid or benzoic acid for a few hours and then heating the product with $\mathrm{H}_{2} \mathrm{O}$ to Hydrolyse the intermediate.
AMU-2013
GENERAL ORGANIC CHEMISTRY
232018
Products of the reaction, are
1 Meso-compounds
2 Racemic mixtures
3 Mixtures of racemic and meso-compounds
4 None of the above
Explanation:
Cis-2 butene on reaction with bromine gives only racemic 2,3-dibromobutane Racemic-2, 3-Dibromobutane
232009
In the reactions \(\mathrm{B} \xrightarrow{\text { Lindlar catalyst }+\mathrm{H}_2} \mathrm{RC} \equiv \mathrm{CR} \xrightarrow{\mathrm{Na} / \mathrm{NH}_3} \mathrm{~A}\) $A$ and $B$ are geometrical isomers. Then
1 $\mathrm{A}$ is cis and $\mathrm{B}$ is trans
2 $\mathrm{A}$ is trans and $\mathrm{B}$ is cis
3 $\mathrm{A}$ and $\mathrm{B}$ are cis
4 A and B are trans
Explanation:
Lindlar catalyst are heterogeneous catalysts whose function to obtain an alkene from an alkyne. Reaction of an alkyne with a solution of an alkali metal in liquid ammonia gives a trans alkene.
A.P. EAMCET (Medical) - 2007
GENERAL ORGANIC CHEMISTRY
232012
The configuration of the compound
1 $\mathrm{R}$
2 $\mathrm{S}$
3 $\mathrm{Z}$
4 $\mathrm{E}$
Explanation:
The configuration of the compound is (R).
AMU-2017
GENERAL ORGANIC CHEMISTRY
232016
For the following conversion, reagent/reagents $(\mathrm{A})$ is/are
1 $\mathrm{OsO}_{4}$
2 $\mathrm{O}_{3}$
3 $\mathrm{I}_{2}$ and silver acetate under wet condition
4 Peracid following by acid hydrolysis.
Explanation:
(D) : and enantiomer hydroxylation with peroxy acid is carried out by allowing alkenes to stands with the mixture of $\mathrm{H}_{2} \mathrm{O}_{2}$ and formic acid or benzoic acid for a few hours and then heating the product with $\mathrm{H}_{2} \mathrm{O}$ to Hydrolyse the intermediate.
AMU-2013
GENERAL ORGANIC CHEMISTRY
232018
Products of the reaction, are
1 Meso-compounds
2 Racemic mixtures
3 Mixtures of racemic and meso-compounds
4 None of the above
Explanation:
Cis-2 butene on reaction with bromine gives only racemic 2,3-dibromobutane Racemic-2, 3-Dibromobutane
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