Question

Paraformaldehyde with 1 2 4 triazole solution in hydrochloric acid

Answer 1

Answer:

e history of hetero-cycles began its journey in the early nineteenth century when Luigi Brugnatelli first isolated the heterocyclic compound alloxan (2,4,5,6-pyrimidinetetrone) in 18181. It is a very important branch of organic chemistry accounting for nearly one-third of modern publications. In fact two thirds of organic compounds are heterocyclic compounds. A cyclic organic compound having all carbon atoms in ring formation is referred to as carbocyclic compound. If at least one atom other than carbon forms a part of the ring system then it is designated as a heterocyclic compound. Nitrogen, Oxygen and Sulfur are the common heteroatoms but heterocyclic rings containing other hetero atoms are also widely known2. There is significant and continuous concern in the chemistry of five-membered N-heterocyclic compounds, mainly tetrazole, triazoles, and their substituted derivatives. Five-membered N- heterocyclic compounds are important structural fragments and considered as biologically active compounds. In 1885, Bladin was the first scientist who gave the name triazole to the carbon nitrogen ring system3