Pyrrole will undergo the following reactions to give the stated products. Pyridine readily undergoes electrophilic substitution. Pyridine resists attack by electrophiles. Pyridine is soluble in liquid ammonia. The amide ion is a strong base in liquid ammonia.
Pyridine is susceptible to nucleophilic attack.
4 question 138 On treatment with an excess of nitrous acid at O o , followed by heating of the resulting solution an organic product is obtained. From theoretical considerations predict the most probable proportions.