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 NHC/Nickel(II)-Catalyzed [3+2] Cross-Dimerization of Unactivated Olefins and Methylenecyclopropanes, published in 2020, which mentions a compound: 16400-32-1, Name is 1-Bromo-2-pentyne, Molecular C5H7Br, Formula: C5H7Br.
Cross-dimerization of a methylenecyclopropane and an unactivated alkene with typical hydroalkenylation reactivity was observed for the first time by using a [NHC-Ni(allyl)]BArF catalyst (NHC=N-heterocyclic carbene). Results show that the C-C cleavage of methylenecyclopropane did not involve a Ni0 oxidative addition, which was crucial in former systems. Thus the method reported here emerges as a complementary method for attaining highly chemo- and regioselective synthesis of methylenecyclopentanes with broad scope. An efficient NHC/NiII-catalyzed rearrangement of methylenecyclopropane leads to the convergent synthesis of methylenecyclopentanes in the presence of unactivated alkene.
This literature about this compound(16400-32-1)Formula: C5H7Brhas given us a lot of inspiration, and I hope that the research on this compound(1-Bromo-2-pentyne) can be further advanced. Maybe we can get more compounds in a similar way.
Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics