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 Synthesis and characterization of nano-zinc wire using a self designed unit galvanic cell in aqueous medium and its reactivity in propargylation of aldehydes, published in 2019-08-16, which mentions a compound: 16400-32-1, Name is 1-Bromo-2-pentyne, Molecular C5H7Br, COA of Formula: C5H7Br.
Electrochem. was used for propargylation of carbonyls in aqueous ZnCl2 medium. For electrochem. process the authors designed a unit galvanic cell. ZnCl2 was used as stoichiometric reagent and causes electrochem. deposition of Zn in cathode. Wire shaped nano Zn architecture was formed in cathode during electrochem. process which is the active reagent. Homopropergylic alcs. were synthesized in good yields. After the organic reaction is over aqueous solution containing Zn salts can be reused up to 5th cycle without significant loss of reactivity.
There is still a lot of research devoted to this compound(SMILES：CCC#CCBr)COA of Formula: C5H7Br, and with the development of science, more effects of this compound(16400-32-1) can be discovered.
Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics