Heptyne Not to be confused with heptane or heptene. Heptynes are alkynes with one triple bond and the molecular formula C7H12. The isomers are: 1-Heptyne 2-Heptyne 3-Heptyne vteAlkynes Ethyne (C2H2) Propyne (C3H4) Butyne (C4H6) 1 2 Pentyne (C5H8) 1 2 Hexyne (C6H10) 1 2 3 Heptyne (C7H12) Octyne (C8H14) 2 4 Nonyne (C9H16) Decyne (C10H18) 1 5 Preparations Cracking Dehydrogenation of alkane, alkene Alkylation of alkynyl anion Dehydrohalogenation of dihaloalkane Fritsch–Buttenberg–Wiechell rearrangement Corey–Fuchs reaction Seyferth–Gilbert homologation Reactions Deprotonation Hydrogenation Halogenation Hydration Hydroboration Hydrohalogenation Alkynylation Thiol-yne reaction Alkyne trimerisation Diels–Alder reaction Pauson–Khand reaction Azide-alkyne Huisgen cycloaddition Sonogashira coupling Cadiot–Chodkiewicz coupling Glaser coupling Favorskii reaction Wikimedia Commons has media related to Heptynes. Index of chemical compounds with the same nameThis set index article lists chemical compounds articles associated with the same name.If an internal link led you here, you may wish to change the link to point directly to the intended article.