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Tuesday, December 8, 2020
What is structure of 1,2,3,4-tetraazole?
What is the structure of Diazole (1,2,3-Triazole and 1,2,4-Triazole) ?
Related Questions:
What is the structure of Pyrrole ,Pyrazole, and Imidazole ?
What is the structure of Pyrrole ,Pyrazole, and Imidazole ?
What is the structure of "Purine" ?
What is the structure "Indole"?
What is the structure of "Quinoline"?
What is the structure of pyridazine ?
What is the structure of pyridine?
What is the structure of thiophene ?
What is the structure of "Furan"?
What is the structure of piperidine?
Thursday, November 19, 2020
Why does aniline not undergo friedel crafts reaction?
Aniline is basic due to the presence of lone pair of electron on the nitrogen atom of amine group. Where as AlCl3 is a Lewis acid which is used as catalyst in friedel craft reaction.
Al has a empty orbital so it accept lone pair electron from amine group hence nitrogen atom of amine acquired positive charge and ring become deactivating. Due to this reason aniline does not undergoes friedel craft reaction.
Related Questions:
- How is base strength related to the availabihty of the electron-pair?
- Amines are more basic than ammonia why?
- What is relative basic strength order 1° amines , 2°amines and 3° amines ? Explain:
- Give an explanation for the fact that Guanidine NH=C(CH3)2 is a stronger base than most of amines?
- Arrange in correct order of basic Character of aniline, pyrrol, pyridine and piperidine?
- What is correct basicity order of pyridine, pyridazine, pyrimidine and pyrazine ?
- Give an explanation for the fact that Guanidine NH=C(CH3)2 is a stronger base than most of amines?
- Arrange in correct order of basic Character of aniline, pyrrol, pyridine and piperidine?
- What is correct basicity order of pyridine, pyridazine, pyrimidine and pyrazine ?
- Why pyridine is more basic than Pyrrole?
- Why pyrimidine is less basic than pyridine?
- Imidazole is more basic than pyridine? Why?
- Biological Important of Imidazole and structure:
- Pyridine is almost 1 million times less basic than piperidine? Why?
- Cyclohexylamine amine is the stronger base than Aniline? Why?
- Tetrahydroquinoline amine is the stronger base than Tetrahydroisoquinoline? Why?
- Arrange the following in the order of increasing basicity : p-Toluidine, N, N-Dimethyl-p-toluidine, p-Nitroaniline, Aniline. (I.I.T.1986)
- Arrange the following in the increasing order of their acid strength : Methyl amine, Dimethyl amine, Aniline, N-methyl aniline (I.I.T, 1988).
Monday, October 5, 2020
Which amine is most basic in gas phase? (3° 2° Or 1°)
Tertiary amines are more basic than secondary amines, which are more basic than primary because in the gas phase, their is less stearic effect as well as no solvation effect so amines exhibit their basicities due to the electron-releasing effects of the organic substituents only , Thus 3° amines, has three ERG groups so it becomes more basic and ammonia is least basic than amines because their is no ERG .
Related Questions:
- What is relative basic strength order 1° amines , 2°amines and 3° amines ?
- Explain:Arrange the following in the increasing order of their acid strength : Methyl amine, Dimethyl amine, Aniline, N-methyl aniline (I.I.T, 1988).
- What is Carbylamine test or Isocyanide test ?
- What is Hinsberg's reagent and where Hinsberg's test use?
- Can we prepare aniline by Gabriel – phthalimide reaction?
- N-Ethyl-N-methyl propanamine does not show optical activity why?
- What is relative basic strength order 1° amines , 2°amines and 3° amines ? Explain:
- Amines are more basic than ammonia why?
- Give an explanation for the fact that Guanidine NH=C(CH3)2 is a stronger base than most of amines?
- Arrange in correct order of basic Character of aniline, pyrrol, pyridine and piperidine?
- What is correct basicity order of pyridine, pyridazine, pyrimidine and pyrazine ?
- Give an explanation for the fact that Guanidine NH=C(CH3)2 is a stronger base than most of amines?
- Arrange in correct order of basic Character of aniline, pyrrol, pyridine and piperidine?
- What is correct basicity order of pyridine, pyridazine, pyrimidine and pyrazine ?
- Why pyridine is more basic than Pyrrole?
- Why pyrimidine is less basic than pyridine?
- Imidazole is more basic than pyridine? Why?
- Biological Important of Imidazole and structure:
- Pyridine is almost 1 million times less basic than piperidine? Why?
- Cyclohexylamine amine is the stronger base than Aniline? Why?
- Tetrahydroquinoline amine is the stronger base than Tetrahydroisoquinoline? Why?
How is basicity order determined?
Related Questions:
- What is relative basic strength order 1° amines , 2°amines and 3° amines ?
- Explain:Arrange the following in the increasing order of their acid strength : Methyl amine, Dimethyl amine, Aniline, N-methyl aniline (I.I.T, 1988).
- What is Carbylamine test or Isocyanide test ?
- What is Hinsberg's reagent and where Hinsberg's test use?
- Can we prepare aniline by Gabriel – phthalimide reaction?
- N-Ethyl-N-methyl propanamine does not show optical activity why?
- What is relative basic strength order 1° amines , 2°amines and 3° amines ? Explain:
- Amines are more basic than ammonia why?
- Give an explanation for the fact that Guanidine NH=C(CH3)2 is a stronger base than most of amines?
- Arrange in correct order of basic Character of aniline, pyrrol, pyridine and piperidine?
- What is correct basicity order of pyridine, pyridazine, pyrimidine and pyrazine ?
- Give an explanation for the fact that Guanidine NH=C(CH3)2 is a stronger base than most of amines?
- Arrange in correct order of basic Character of aniline, pyrrol, pyridine and piperidine?
- What is correct basicity order of pyridine, pyridazine, pyrimidine and pyrazine ?
- Why pyridine is more basic than Pyrrole?
- Why pyrimidine is less basic than pyridine?
- Imidazole is more basic than pyridine? Why?
- Biological Important of Imidazole and structure:
- Pyridine is almost 1 million times less basic than piperidine? Why?
- Cyclohexylamine amine is the stronger base than Aniline? Why?
- Tetrahydroquinoline amine is the stronger base than Tetrahydroisoquinoline? Why?
N,N,2,6-Tetramethyl aniline is more basic than N,N-Dimethyl aniline.Why ?
Saturday, February 8, 2020
How to determine Basic order of different amines and it derivatives ?
- How is base strength related to the availabihty of the electron-pair?
- Amines are more basic than ammonia why?
- What is relative basic strength order 1° amines , 2°amines and 3° amines ? Explain:
- Give an explanation for the fact that Guanidine NH=C(CH3)2 is a stronger base than most of amines?
- Arrange in correct order of basic Character of aniline, pyrrol, pyridine and piperidine?
- What is correct basicity order of pyridine, pyridazine, pyrimidine and pyrazine ?
- Give an explanation for the fact that Guanidine NH=C(CH3)2 is a stronger base than most of amines?
- Arrange in correct order of basic Character of aniline, pyrrol, pyridine and piperidine?
- What is correct basicity order of pyridine, pyridazine, pyrimidine and pyrazine ?
- Why pyridine is more basic than Pyrrole?
- Why pyrimidine is less basic than pyridine?
- Imidazole is more basic than pyridine? Why?
- Biological Important of Imidazole and structure:
- Pyridine is almost 1 million times less basic than piperidine? Why?
- Cyclohexylamine amine is the stronger base than Aniline? Why?
- Tetrahydroquinoline amine is the stronger base than Tetrahydroisoquinoline? Why?
- Arrange the following in the order of increasing basicity : p-Toluidine, N, N-Dimethyl-p-toluidine, p-Nitroaniline, Aniline. (I.I.T.1986)
- Arrange the following in the increasing order of their acid strength : Methyl amine, Dimethyl amine, Aniline, N-methyl aniline (I.I.T, 1988).
Related Questions:
Friday, January 31, 2020
Prpare Benzilic acid (1-hydroxyl-1,1-diphenylethanoic acid) from either cis or trans stilbene.
First Convert stilbene into vicinal alcohol by oxidation with cold KMnO4 and on acidification gives Benzilic which undergoes rearrangment to form Benzilic acid