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 Distal Alkenyl C-H Functionalization via the Palladium/Norbornene Cooperative Catalysis, published in 2020-02-12, which mentions a compound: 16400-32-1, Name is 1-Bromo-2-pentyne, Molecular C5H7Br, Synthetic Route of C5H7Br.
A distal-selective alkenyl C-H arylation method was reported through a directed palladium/norbornene (Pd/NBE) cooperative catalysis. An usage of appropriate combination of the directing group and the NBE cocatalyst was the key feature of this method. A range of acyclic and cyclic cis-olefins were suitable substrates and the reaction was operated under air with excellent site-selectivity. Preliminary mechanistic studies were consistent with the proposed Pd/NBE-catalyzed C-H activation instead of the Heck pathway. Initial success on distal alkylation was achieved using MeI and Me bromoacetate as electrophiles.
If you want to learn more about this compound(1-Bromo-2-pentyne)Synthetic Route of C5H7Br, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(16400-32-1).
Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics