炔类
Addition Reactions to Alkynes, Hydrogenation, Halogenation and HX. Hydration of alkynes. Tautomerization. 炔烃的加成，氢化，卤化和HX.
Alkynes have one or more triple bonds, the carbon atoms sharing three pairs of electrons. 链炔有一个或超过三个共价键，即碳原子享有三对电子。
Alkanes, alkenes, and alkynes are all hydrocarbons (compounds made up of hydrogen and carbon only). 链烷、链烯和链炔都是碳氢化合物（纯净的碳和氢所组成的化合物）。
Naming of alkynes is very similar to the naming of alkenes, using the root name of the longest carbon chain. 选取同时含叁键和双键最长的碳链做母体，使双键位次尽可能最小。
This article reviews recent methods used in organic synthesis for the stereoselective reduction of alkynes to Z or E alkenes. 综述了在有机合成领域中，通过炔烃立体选择性还原制备Z-或E-烯烃的近期方法。
