Advices For Studying Organic Chemistry

1. Ethene (ethylene): US produces 30 billion pounds (~1,364 萬噸) each year.
   
   
   1. Ethene is produced naturally by fruits such as tomatoes and bananas as a plant
      hormone for the ripening process of these fruits.
   
   
   2. Ethene is used as a starting material for the synthesis of many industrial
      compounds, including ethanol, ethylene oxide, ethanal (acetaldehyde), and
      polyethylene (PE).
   
   
   
   


2. Propene (propylene): US produces 15 billion pounds (~682 萬噸) each year.
   
   
   1. Propene is used as a starting material for the synthesis of acetone, cumene
      (isopropylbenzene), and polypropylene (PP).
   
   
   
   


3. Naturally occurring alkenes:

¡Ý

β-Pinene (a component of turpentine) An aphid (蚜蟲) alarm pheromone

2.2C ALKYNES

1. Ethyne (acetylene):
   
   
   1. Ethyne was synthesized in 1862 by Friedrich Wöhler via the reaction of calcium
      carbide and water.
   
   
   2. Ethyne was burned in carbide lamp (miners’ headlamp).
   
   
   3. Ethyne is used in welding torches because it burns at a high temperature.
   
   
   
   


2. Naturally occurring alkynes:
   
   
   1. Capilin, an antifungal agent.
   
   
   2. Dactylyne, a marine natural product that is an inhibitor of pentobarbital
      metabolism.