Содержание
- 2. Alkynes(or acetylenes) Hydrocarbons that contain the carboncarbon triple bond –C (triple)C- are called alkynes General formula:
- 3. NOMENCLATURE The naming of alkynes is similar to that of other hydrocarbons. Alkynes may contain more
- 4. CYCLOALKYNES Alkynes may be cyclo compounds (cycloalkynes). The simplest stable cycloalkyne at room temperature is cyclononyne.
- 5. ISOMERISM The triple bond may be in different locations in an alkyne, so alkynes can exhibit
- 6. PHYSICAL PROPERTIES Similar to alkanes, alkenes : Insoluble in water. BUT Soluble in organic solvents Density
- 7. CHEMICAL PROPERTIES Alkynes are unsaturated compounds and their chemical properties are similar to alkenes. Alkynes undergo
- 8. COMBUSTION REACTIONS Alkynes produce CO2 and H20 when they're burnt with a sufficient amount of oxigen.
- 9. ADDITION REACTIONS Addition reactions occur by breaking the π bonds of the triple bond. Hydrogen, halogens,
- 10. PREPERATION OF ALKYNES Alkynes can be synthesized from metallic acetlylides and alkyl halides.
- 11. ACETYLENE Acetylene, the first member of the alkyne series, is one of the major chemicals used
- 12. ALKYNYL GROUP Alkynyl groups are formed from alkynes by removing one H atom. The most common
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