Amines(11th And 12th > Chemistry ) Questions and Answers
Question 5.
Some statements are given about acylation of amines with acid chloride
I. Tertiary amines do not react with acid chloride
II. This reaction is an example of a nuclophilic addition reaction
III. This reaction is carried out in the presence of pyridine
IV. Aliphatic and aromatic primary and secondary amines involve in this reaction
The correct statements is/ are
Explanation:-
Answer: Option B. -> I, III, IV only:
B
Statement II refers to is a nucleophilic substitution reaction
Explanation:-
Answer: Option A. -> 2, 4:
A
2 & 4 are 10 amine; 1 is 30 amine; 3 is 20 amine & only 10 amine gives a positive carbyl amine test
Explanation:-
Answer: Option C. -> - NH2 becomes - NH3 +, which is meta directing:
C
NH2 is o & p - directing group where as NH3+ is meta directing group
Explanation:-
Answer: Option D. -> N -methyl benzyl amine.:
D
Gabriel pthalamide is used in the preparation of aliphatic and arylalkyl primary amines only
N- methyl benzyl amine(CH3 NH CH2C6H5) being a secondary amine cannot be prepared by this method.