Texas Pentyne may refer to: 2-Pentyne (ethyl methyl acetylene) 1-Pentyne (propylacetylene) Alkynes 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 Thiol-yne reaction Alkyne trimerisation Diels–Alder reaction Pauson–Khand reaction Azide-alkyne Huisgen cycloaddition Sonogashira coupling Cadiot–Chodkiewicz coupling Glaser coupling Favorskii reaction