Heterocyclic Compounds

Which of the following is not example of hetero atom

• Carbon

• Oxygen

• Nitrogen

• Sulphur

Select the five membered Heterocyclic compounds

• Pyrrole

• Furan

• Pyridine

• Thiophene

Furan, pyrrole & thiophene undergoes electrophilic substitution at ........ position

• 1

• 3

• 2

• 4

Thiophene can not be prepared from

• Acetylene

• n-Butane

• Ethylene

• Sodium Succinate

Reaction of furan with acetyl chloride in presence of AlCl3 gives

• Furfural

• 2 acetyl furan

• 3 acetyl furan

• 2 benzoyl furan

Reaction of pyrrole with conc.H2So4 undergoes Sulphonation gives

• 2 sulpho pyrrole

• 2 pyrrole sulphonic acid

• 3 sulpho pyrrole

• 3 pyrrole sulphonic acid

Reaction of Acetylene with ammonia in Red hot tube gives

• Pyridine

• Thiophene

• Pyrrole

• Furan

Furan on hydrogenation gives

• Tetrahydrofuran

• Piperidine

• Pyrrolidene

• None

What is the product of the reaction?

• furfural

• furoic acid

• tetrahydrofuran

What is the reagent of the reaction?

• CHCl₃ and NaOH

• HCN/HCl

• H₂SO₄ /HNO₃