In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Pyridyl-urea catalysts for the solvent-free ring-opening polymerization of lactones and trimethylene carbonate, published in 2019-12-31, which mentions a compound: 1827-27-6, Name is 5-Amino-2-fluoropyridine, Molecular C5H5FN2, Electric Literature of C5H5FN2.
The ring-opening polymerization (ROP) of lactones is an effective method for the preparation of biocompatible and biodegradable aliphatic polyesters, for which the development of efficient organocatalysts with high activity and good controllability is highly desirable. A series of novel pyridyl-urea catalysts was synthesized and applied in the solvent-free ROP of lactones and trimethylene carbonate. Combined with 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene (MTBD), the pyridyl-urea/MTBD systems showed a fast and living/controlled behavior in the ROP, generating polymers with narrow mol. weight distributions. The influences of catalyst structure, type of base, pyridyl-urea/base ratio, feed ratio of monomer/initiator and reaction temperature on the catalytic properties were investigated. A possible mechanism was proposed on the basis of NMR titration and dilution experiments
This literature about this compound(1827-27-6)Electric Literature of C5H5FN2has given us a lot of inspiration, and I hope that the research on this compound(5-Amino-2-fluoropyridine) can be further advanced. Maybe we can get more compounds in a similar way.