In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Synthesis of new proton-pump inhibitors, published in 1996-06-30, which mentions a compound: 84547-64-8, mainly applied to antiulcer agent pyrazole derivative preparation, Synthetic Route of C5H7ClN2.
For development new anti-ulcer agents, we synthesized omeprazole analogs, in which pyridine group was replaced by pyrazole moiety, to increase pharmacol. activity and to decrease side effects, and also synthesize substituted benzimidazole rings.
Different reactions of this compound(3-(Chloromethyl)-1-methyl-1H-pyrazole)Synthetic Route of C5H7ClN2 require different conditions, so the reaction conditions are very important.
Reference:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics