Answer
Verified
34.8k+ views
Hint: The carbylamine reaction is also known as the Hofmann isocyanide synthesis. It is used to test the presence of primary amines. If primary amines are present then they convert into carbonyl amines which will give a foul smell.
Complete step by step answer:
-Carbylamine is also called Isocyanide or Isonitrile. Carbylamines are a class of organic compounds having the molecular structure\[R-\overset{+}{\mathop{N}}\,\equiv C\] here R = organic compound.
-Primary amines on warming with chloroform and alcoholic KOH gives carbylamine (Isocyanide) as the product.
-In this reaction carbylamine is going to form as a product then this reaction is called carbylamine reaction.
-The reaction is as follows.
-The reaction mechanism of carbylamine reaction is as follows.
-The reaction mechanism includes the reaction of a primary amine to the intermediate (dichloroCarbene) formed from the dehydrohalogenation of chloroform. This intermediate is called dichlorocarbene
-The heat in the reaction is required to generate the dichlorocarbene from chloroform.
-Therefore the primary amines are going to react with chloroform in presence of alcoholic KOH gives isocyanide as the product.
So, the correct option is B.
Additional information:
-Secondary amines and tertiary amines do not respond to carbylamine tests.
-Both aliphatic and aromatic primary amines are going to respond with carbylamine reaction.
Note: The formation of isocyanide can be easily identified with strong foul smell. Strong foul smell is an indication for the presence of primary amines in the given compounds. This reaction is introduced by Hoffman, so this reaction is also called Hoffman isocyanide synthesis.
Complete step by step answer:
-Carbylamine is also called Isocyanide or Isonitrile. Carbylamines are a class of organic compounds having the molecular structure\[R-\overset{+}{\mathop{N}}\,\equiv C\] here R = organic compound.
-Primary amines on warming with chloroform and alcoholic KOH gives carbylamine (Isocyanide) as the product.
-In this reaction carbylamine is going to form as a product then this reaction is called carbylamine reaction.
-The reaction is as follows.
-The reaction mechanism of carbylamine reaction is as follows.
-The reaction mechanism includes the reaction of a primary amine to the intermediate (dichloroCarbene) formed from the dehydrohalogenation of chloroform. This intermediate is called dichlorocarbene
-The heat in the reaction is required to generate the dichlorocarbene from chloroform.
-Therefore the primary amines are going to react with chloroform in presence of alcoholic KOH gives isocyanide as the product.
So, the correct option is B.
Additional information:
-Secondary amines and tertiary amines do not respond to carbylamine tests.
-Both aliphatic and aromatic primary amines are going to respond with carbylamine reaction.
Note: The formation of isocyanide can be easily identified with strong foul smell. Strong foul smell is an indication for the presence of primary amines in the given compounds. This reaction is introduced by Hoffman, so this reaction is also called Hoffman isocyanide synthesis.
Recently Updated Pages
If a wire of resistance R is stretched to double of class 12 physics JEE_Main
The path difference between two waves for constructive class 11 physics JEE_MAIN
What is the difference between solvation and hydra class 11 chemistry JEE_Main
IfFxdfrac1x2intlimits4xleft 4t22Ft rightdt then F4-class-12-maths-JEE_Main
Sodium chloride is purified by passing hydrogen chloride class 11 chemistry JEE_Main
Hydrogen readily combines with nonmetals and thus it class 12 chemistry JEE_Main
Other Pages
when an object Is placed at a distance of 60 cm from class 12 physics JEE_Main
What is the pH of 001 M solution of HCl a 1 b 10 c class 11 chemistry JEE_Main
What is the force exerted by a photon of intensity class 12 physics JEE_Main
Excluding stoppages the speed of a bus is 54 kmph and class 11 maths JEE_Main
On hydrolysis of an interhalogen compound oxyhalide class 11 chemistry JEE_Main
Dissolving 120g of urea molwt60 in 1000g of water gave class 11 chemistry JEE_Main