Question

19. Which of the following is the least basic

(1)C6H5-NH2
(2) C6H5-CH2-NH2
(3) C2H5-NH2
(4)pyrole​

Answer 1

Answer:pyrole

Explanation:

Between aniline and pyrole if we are going to compare then in case of aniline though the lone pair of electron is involved in resonance it is not involved In aromatisation.. still some amount is there..but in pyrole it involves in aromatisation..so no availability of lpe..thus it is least basic..